أفضل ورم حميد الخصية أطباء المسالك البولية - توب -101 أطباء

Experience

2017 - 2022 Haseki Training and Research Hospital, Associate Professor

2017 - 2022 Haseki Training and Research Hospital

2013 - 2017 Haseki Training and Research Hospital

2013 - 2017 Haseki Training and Research Hospital, Chief Resident

2010 - 2013 Silivri State Hospital (Compulsory Service Obligation)

2008 - 2008 University of Michigan Medical School

2005 - 2010 Istanbul Medical Faculty, Department of Urology

Education

2010 Istanbul University, Istanbul Medical Faculty, Department of Urology

2004 Istanbul University, Istanbul Medical Faculty

Publications

International Peer-Reviewed Journals:

Culpan M, Atis G, Sanli O, Bozkurt Y, Atmaca AF, Semerci B, Kutsal C, Canda AE, Akbulut F, Tugcu V, Boylu U, Erturhan S, Koca O, Ateş F, Halis F, Soyupek S, Turna B, Cakmak S, Sahin S, Erdem S, Yildirim A. "Comparison of Tumor Enucleation and Standard Partial Nephrectomy According to Trifecta Outcomes: A Multicenter Study by the Turkish Academy of Urology, Uro-Oncology Working Group." J Invest Surg. 2022 May;35(5):1112-1118.

Sahan M, Sarilar O, Akbulut MF, Demir E, Savun M, Sen O, Ozgor F. "Flexible ureterorenoscopy and laser lithotripsy with regional anesthesia vs general anesthesia: A prospective randomized study." Int Braz J Urol. 2020 Nov-Dec;46(6):1010-1018.

Cubuk A, Yanaral F, Savun M, Ayranci A, Erbin A, Yazici O, Akbulut MF, Sarilar O. "Modified autologous transobturator tape surgery - evaluation of short-term results." Ginekol Pol. 2020;91(2):51-56.

Kandemir E, Savun M, Sezer A, Erbin A, Akbulut MF, Sarilar Ö. "Comparison of Miniaturized Percutaneous Nephrolithotomy and Standard Percutaneous Nephrolithotomy in Secondary Patients: A Randomized Prospective Study." J Endourol. 2020 Jan;34(1):26-32.

Ucpinar B, Erbin A, Ayranci A, Caglar U, Alis D, Basal S, Sarilar O, Akbulut MF. "Prediction of recurrence in non-muscle invasive bladder cancer patients. Do patient characteristics matter?" J BUON. 2019 Jul-Aug;24(4):1659-1665.

Ozdemir H, Erbin A, Sahan M, Savun M, Cubuk A, Yazici O, Akbulut MF, Sarilar O. "Comparison of supine and prone miniaturized percutaneous nephrolithotomy in the treatment of lower pole, middle pole and renal pelvic stones: A matched pair analysis." Int Braz J Urol. 2019 Sep-Oct;45(5):956-964.

Erbin A, Ucpinar B, Cubuk A, Yazici O, Uysal H, Savun M, Basal S, Akbulut MF. "The Impact of Sheath Size in Miniaturized Percutaneous Nephrolithotomy in Adult Patients; A Matched-pair Analysis." Urol J. 2019 Dec 24;16(6):536-540.

Güler A, Erbin A, Ucpinar B, Savun M, Sarilar O, Akbulut MF. "Comparison of miniaturized percutaneous nephrolithotomy and standard percutaneous nephrolithotomy for the treatment of large kidney stones: a randomized prospective study." Urolithiasis. 2019 Jun;47(3):289-295.

Yanaral F, Ozgor F, Savun M, Agbas A, Akbulut F, Sarilar O. "Shock-wave Lithotripsy for Pediatric Patients: Which Nomogram Can Better Predict Postoperative Outcomes?" Urology. 2018 Jul;117:126-130.

Arslan B, Akbulut MF, Onuk O, Küçüktopçu O, Çilesiz NC, Ozkan A, Yazıcı G. "A comparison of Amplatz dilators and metal dilators for tract dilatation in mini-percutaneous nephrolithotomy." Int Urol Nephrol. 2017 Apr;49(4):581-585.

Akbulut F, Kucuktopcu O, Kandemir E, Ucpinar B, Ozgor F, Simsek A, Arslan B, Erbin A, Yanaral F, Binbay M, Gurbuz G. "Efficacy and safety of mini percutaneous nephrolithotomy in obese patients." Springerplus. 2016 Jul 22;5(1):1148.

Sancak EB, Oguz S, Akbulut T, Uludag A, Akbas A, Kurt O, Akbulut MF. "Female sexual dysfunction in androgenetic alopecia: Case-control study." Can Urol Assoc J. 2016, July;10(7-8):E251-256.

Akbulut F, Kucuktopcu O, Kandemir E, Sonmezay E, Simsek A, Ozgor F, Binbay M, Muslumanoglu AY, Gurbuz G. "Comparison of flexible ureterorenoscopy and mini-percutaneous nephrolithotomy in treatment of lower calyceal stones smaller than 2 cm." Ren Fail. 2016;38(1):163-7.

Tok A, Akbulut F, Buldu I, Karatag T, Kucuktopcu O, Gurbuz G, Istanbulluoglu O, Armagan A, Tepeler A, Tasci AI. "Comparison of microperc and mini-percutaneous nephrolithotomy for medium-sized lower calyx stones." Urolithiasis. 2016 Apr;44(2):155-9.

Akbulut F, Tok A, Penbegul N, Daggulli M, Eryildirim B, Adanur S, Gurbuz G, Celik H, Utangac MM, Dede O, Bodakcı MN, Tepeler A, Sarica K. "Colon perforation related to percutaneous nephrolithotomy: from diagnosis to treatment." Urolithiasis. 2015 Nov;43(6):521-6.

Ozluk Y, Sari S, Guzel NT, Firat P, Akbulut F, Kilicaslan I. "Mixed epithelial and stromal tumor of the kidney with sarcomatous transformation metastatic to the lung: A case report." Anal Quant Cytopathol Histpathol. 2015 Jun;37(3):199-205.

Ozgor F, Kucuktopcu O, Sarilar O, Toptas M, Simsek A, Gurbuz ZG, Akbulut MF, Binbay M. "Does previous open renal surgery or percutaneous nephrolithotomy affect the outcomes and complications of percutaneous nephrolithotomy." Urolithiasis. 2015 Nov;43(6):541-7.

Ugurlu İM, Akman T, Binbay M, Tekinarslan E, Yazıcı Ö, Akbulut MF, Özgör F, Müslümanoğlu AY. "Outcomes of retrograde flexible ureteroscopy and laser lithotripsy for stone disease in patients with anomalous kidneys." Urolithiasis. 2015 Feb;43(1):77-82.

Simsek A, Ozgor F, Kirecci SL, Akbulut MF, Sonmezay E, Yuksel B, Kucuktopcu O, Gurbuz ZG. "Results of tension-free vaginal tape for recurrent stress urinary incontinence after unsuccessful transobturator tape surgery." J Obstet Gynaecol Res. 2014 Jun;40(6):1764-9.

Simsek A, Kirecci SL, Kucuktopcu O, Ozgor F, Akbulut MF, Sarilar O, Ozkuvanci U, Gurbuz ZG. "Comparison of paroxetine and dapoxetine, a novel selective serotonin reuptake inhibitor in the treatment of premature ejaculation." Asian J Androl. 2014 Sep-Oct;16(5):725-7.

Akbulut F, Kucuktopcu O, Sonmezay E, Simsek A, Ozgor F, Gurbuz ZG. "Partial penectomy after debridement of a Fournier's gangrene progressing with an isolated penile necrosis." Ulus Travma Acil Cerrahi Derg. 2014 Sep;20(5):385-8.

Simsek A, Ozgor F, Yuksel B, Kucuktopcu O, Kirecci SL, Toptas M, Sarilar O, Berberoglu AY, Gurbuz ZG, Mimaroglu S, Akbulut F, Baykal M, Arslan B, Savun M, Ucpinar B. "Female sexual function after transobturator tape in women with urodynamic stress urinary incontinence." Springerplus. 2014 Sep 30;3:570.

Akbulut F, Akman T, Salabas E, Dincer M, Ortac M, Kadioglu A. "Neurovascular bundle dissection for Nesbit procedure in congenital penile curvature patients: medial or lateral?" Asian J Androl. 2014 May-Jun;16(3):442-5.

Kadioglu A, Sanli O, Akman T, Canguven O, Aydin M, Akbulut F, Kucukdurmaz F. "Factors Affecting the Degree of Penile Deformity in Peyronie's Disease: An Analysis of 1001 Patients." J Androl. 2011 Sep-Oct;32(5):502-8.

Akman T, Sanli O, Uluocak N, Akbulut F, Nane I, Demir S, Kadioglu A. "The most commonly altered type of Peyronie's disease deformity under oral colchicine treatment is lateral curvature that mostly shifts to the dorsal side." Andrologia. 2011 Feb;43(1):28-33.

Akbulut MF, Sanli O, Kadioglu A. "Editorial Comment on: Are Infertile Men Less Healthy than Fertile Men? Results of a Prospective Case-Control Survey." Eur Urol. 2009 Dec;56(6):1032.

Acar O, Akinci M, Uluocak N, Akbulut F, Kilicaslan I, Gokce O. "Paratesticular metastasis of malignant melanoma: a case report." Kaohsiung J Med Sci. 2008 Jun;24(6):315-8.

Çubuk A, Erbin A, Savun M, Ayranci A, Üçpınar B, Yanaral F, Sarılar Ö, Basal Ş, Akbulut MF. "Autologous transobturator midurethral sling." Turk J Urol. 2018 Dec 21;45(3):230-232.

Sarılar Ö, Özgör F, Küçüktopçu O, Uçpınar B, Akbulut MF, Savun M, Gürbüz ZG, Binbay M. "Is standard percutaneous nephrolithotomy still the standard treatment modality for renal stones less than three centimeters?" Turk J Urol. 2017 Jun;43(2):165-170.

Akbulut F, Savun M, Ucpinar B, Sahan M, Arslan B, Ozgor F, Simsek A, Berberoglu AY, Baykal M, Binbay M. "Duplicated Renal System with H Shaped Ureter: An Extraordinary Anomaly." Case Rep Urol. 2016;2016:4062515.

Akbulut F, Kucuktopcu O, Kandemir E, Sonmezay E, Simsek A, Ucpinar B, Ozgor F, Gurbuz G. "Comparison of efficacy of laser lithotripter with ultrasonic lithotripter in mini percutaneous nephrolithotomy." Arch Ital Urol Androl. 2016 Jan 14;87(4):276-9.

Ozgor F, Simsek A, Aydogdu O, Kucuktopcu O, Sarilar O, Berberoglu AY, Akbulut MF, Binbay M. "Bleeding during laparoscopic partial nephrectomy: Can a hemostatic matrix help to improve hemostasis?"

Academic training

Degree in Medicine and Surgery, (marks 107/110) on 30/10/2003, University of Catania;

Specialization in Urology, (marks 70/70 with honors) 01/09/2009, School of Specialization in Urology of the University of Padua, Director Prof. Walter Artibani.

Specialty thesis: Histological concordance between biopsy and definitive histological examination in patients suffering from renal neoplasia

Fellow of the European Board of Urology F.E.B.U. from 06/06/2009;

Doctorate in Surgery, 07/08/2013, (European Doctor cum laude) Universitat Autonoma de Barcelona.

Thesis title: Radical Cystectomy and urinary diversion: is there a role for bowel in the future?

Specialization in Andrology, (01/06/2013 – 30/06/2015) Universitat Autonoma de Barcelona, Fundavò Puigvert, Barcelona, Spain.

Master in Clinical Andrology and Sexual Medicine (2015-2017) University of Padua

Professional and Clinical Experience

From June 2013 to June 2015 Fellow of the Andrology Unit, Fundació Puigvert, Universitat Autonoma de Barcelona, Barcelona, Spain; Training in Clinical and Surgical Andrology; Prosthetic Implant; Medical and surgical treatment of penile curvature; Microsurgical varicocelectomy; Microsurgery in Andrology and Urology; Study and treatment of male and couple infertility; Sexual Dysfunctions; Sexually Transmitted Diseases;

From November 2012 to May 2013 structured doctor of the Female Functional Urology and Urodynamics Unit of the Fundació Puigvert, Barcelona, Spain. Consolidating theoretical-practical knowledge in the study and treatment of male and female urinary incontinence, carrying out procedures as the first operator for the treatment of male and female urinary incontinence in total autonomy and carrying out urodynamic studies for the diagnosis of incontinence and functional disorders of the bladder;

From April 2012 to October 2012, structured doctor of the Urology Oncology, Pediatric Urology and Endoscopy Unit of the Fundació Puigvert, Barcelona, carrying out endoscopic procedures and minor and major surgery in total autonomy as first operator;

From April 2011 to March 2012 Structured doctor of the Pediatric Urology Unit of the Fundació Puigvert, Universitat Autonoma de Barcelona, Barcelona, Spain. Clinical and Surgical Activities in the field of Pediatric Urology focusing on the medical, endoscopic and surgical treatment of enuresis, functional bladder disorders, vesicoureteral reflux, urinary tract lithiasis and various other uro-pediatric pathologies;

From October 2010 to April 2011, structured doctor of the Female Functional Urology and Urodynamics Unit of the Fundació Puigvert, Barcelona, carrying out as first operator procedures for the treatment of male and female urinary incontinence and obtaining full autonomy in the carrying out of urodynamic studies for the for the diagnosis of incontinence and functional bladder disorders;

From October 2009 to September 2010 Fellow of the Uro-Oncology Unit of the Fundació Puigvert, Barcelona, carrying out endoscopic, major surgery and laparoscopic procedures as first operator.

Education and Experience

Dr. Ramazan Gökhan Atış, born in Istanbul in 1978, graduated from Cağaloğlu Anatolian High School in 1996. He completed his medical education at Çapa Faculty of Medicine in 2002. Between 2002 and 2008, he received his specialization training at the Istanbul Şişli Etfal Training and Research Hospital Department of Urology, and obtained the title of Urology Specialist in February 2008. After working at Edremit Military Hospital between 2008 and 2009, he started working as a Urology specialist at Istanbul Göztepe Training and Research Hospital in 2009. In 2011, he underwent a 3-month Laparoscopy-Robotic Urology training at Heidelberg University Heillbronn Clinic. Between 2009 and 2014, he conducted numerous scientific research studies, especially in the field of endourology, and obtained the title of Associate Professor in September 2014. In 2017, he was elected as a board member of the Endourology Society and has been serving in this position since then. Since 2018, he has been actively involved in the Endourology working group of the European Association of Urology, Young Academic Urologists (EAU-YAU) Committee for a period of 2 years. In January 2021, he was appointed as a Professor at the Istanbul Medeniyet University Department of Urology.After that started working at Şişli Memorial Hospital in 2022. Prof. Dr. Ramazan Gökhan Atış, has more than 100 articles published in national and international journals.

• 1996 - 2002, Istanbul University Istanbul Faculty of Medicine, Undergraduate
• 2002 - 2008, Şişli Etfal Training and Research Hospital/Istanbul, Specialization in Medicine
• 2014, Istanbul Medeniyet University Goztepe Training and Research Hospital, Associate Professorship
• 2021, Istanbul Medeniyet University Department of Urology, Professorship

Administrative Duties

• Editor of Endourology Bulletin
• Board Member of Endourology Society (Secretary General)

Memberships in Scientific Organizations

• Turkish Urology Association
• Turkish Endourology Association
• Turkish Andrology Association
• Eurasian Urooncology Association
• Turkish Medical Association

Areas of Expertise and Interest

• Urological Cancers (Robotic and Laparoscopic Surgery)
• Stone diseases
• Benign prostate hyperplasia
• Minimally invasive prostate treatments (HoLEP, TuLEP, Rezum, TUR-P,..)
• Kidney Diseases
• Prostate Diseases
• Bladder Diseases
• Testis Diseases
• Sexual Dysfunctions - Infertility
• Infections

Education

• Bachelor's / Master's Degree: Faculty of Medicine, Istanbul University, 2006
• PhD: Urology, Bezmialem Vakıf University, 2012

Professional and Observational Experience in Medicine

• Research Assistant, Istanbul University, Istanbul Faculty of Medicine, Department of Anatomy, 10/2006 - 03/2007
• Research Assistant, Bezmialem Valide Sultan Foundation Gureba Training and Research Hospital, Urology Clinic, 08/2007 - 10/2010
• Research Assistant, Bezmialem University, Department of Urology, 10/2010 - 08/2012
• Observer, University of Michigan, Department of Urology, Ann Arbor, MI, USA, 05/2011 - 06/2011
• Specialist, Idil State Hospital, Idil, Şırnak, 11/2012 - 08/2014
• Specialist, Giresun Dr. A. İlhan Özdemir State Hospital, Giresun, 09/2014 - 2015
• Associate Professor, Bezmialem Vakıf University, Department of Urology, 2015 - 2024
• Associate Professor, Medipol Acıbadem Regional Hospital, 2024 - Present

Awards Received

• Effects of Sildenafil Citrate and Serotonin Reuptake Inhibitors on the Expression of Inducible Nitric Oxide Synthase, Endothelial Nitric Oxide Synthase, Neuronal Nitric Oxide Synthase, and Hypoxia-Inducible Factor-1 Alpha in Pulmonary Hypertension-Induced Rat Cavernous Tissues. Ilbey Y.Ö, Şimşek A, Özcan L, Cilli M, Polat E.C, Ersöz C, Somay A, Özbek E. 8th National Andrology Congress (International Participation), İzmir, Turkey, May 20-23. Congress Abstract Book; 22: SS-01 (2009). (Male Sexual Health Alpay Kelami Award)
• Extraperitoneal (EXPERT-ONOL) Sacrocolpopexy in the Treatment of Advanced Uterovaginal and Vaginal Prolapse: Intermediate-Term Results. Önol Ş.Y, Armağan A, Tepeler A, Başıbüyük İ, Ersöz C, Erdem M.R. 22nd National Urology Congress (International Participation), Girne, Turkish Republic of Northern Cyprus, May 02-06. Congress Abstract Book, 369: V-021 (2012).

Certificates

• Prof. Cevper Ersöz has over 130 national and international publications.

Memberships in Scientific Organizations

• Turkish Urology Association
• Turkish Pediatric Urology Association
• Turkish Endourology Association
• European Association of Urology (EAU)
• European Society of Endourology

Education :

University: School of Medicine (English), Marmara University, 1989-1997

Residency: Urology / Urology Clinic, Dr Lütfü Kırdar Kartal Training and Research Hospital 1998-2003

Medical Specialty Thesis and Supervisors: The Role of Nerve Growth Factor in Bladder Outflow Obstruction, Assoc. Prof. Uğur Kuyumcuoğlu, M.D.

Assoc. Prof.: Urology Clinic, Dr Lütfü Kırdar Kartal Training and Research Hospital 2013

Biography :

Resident / Dr. Lütfi Kırdar Kartal Training and Research Hospital (1998 – 2003)

• Army Physician / Sarıkamış 200-Bed Military Hospital (2003-2004)

• Chief Resident / Dr. Lütfi Kırdar Kartal Training and Research Hospital (2004 – 2017)

• Physician / Aydın Atatürk State Hospital (2017)

• Physician / Kocaeli Acıbadem Hospital (2017-2018)

• Physician / Adatıp Hospital (2018-…)

Area of Specialty :

İçerik Yazınız

Memberships :

Turkish Association of Urologic Surgery

Turkish Association of Urology

Turkish Association of Andrology

Society of Endourology

Urooncology Association

Turkish Medical Association

Personal information

Title: Associate Professor

Branch: Urology

Work History:

1 Istanbul Ümraniye Training and Research Hospital

2 Kars State Hospital

3 Çatalca İlyas Çokay State Hospital

4 Istanbul Bilim University Faculty of Medicine Urology Clinic

5 Gayrettepe Florence Nightinagle Hospital

Medical Specialties and Subspecialties:

Laparoscopic Surgery

Education

2007 - Istanbul University Cerrahpaşa Faculty of Medicine

2012 - Istanbul Ümraniye Training and Research Hospital (Specialization)

Prof. Dr. Özgür Haki Yüksel - Specialist in Urology

Education and Specialization:

• Medical Degree: Ankara University Faculty of Medicine (2003)
• Residency in Urology: Haydarpaşa Numune Training and Research Hospital (2003-2008)
• Advanced Training: Clinical observership at the University of Michigan, Department of Urology, Ann Arbor, MI, USA under Prof. J. Stuart Wolf (2015)

Professional Experience:

• 2003-2008: Urology Residency at Haydarpaşa Numune Training and Research Hospital
• 2009-2010: Military Service
• 2010-2018: Urology Specialist at Fatih Sultan Mehmet Training and Research Hospital
• 2018-Present: Professor and Urology Specialist at VM Medical Park Pendik Hospital
• 2018-Present: Faculty Member at Bahçeşehir University Faculty of Medicine, Department of Urology

Areas of Expertise:

• Urological Oncology
• Endourology (Laparoscopy, Robotic Surgery)
• Stone Diseases
• Urogynecology (Urinary Incontinence)
• Andrology (Infertility)

Research and Publications: Prof. Dr. Yüksel has contributed to 12 national and 34 international publications, including editorials, case reports, reviews, and original articles. He has also presented 16 international and 30 national conference papers and contributed to chapters in two national books.

Certifications and Awards:

• FEBU Board Certification, recognized across European countries for urology specialization
• Numerous certifications from national and international courses and congresses, including the European Board of Urology oral and written exams

Professional Memberships:

• Turkish Urology Association
• European Urology Association (EAU)

Education and Specialization:

Medical Degree: Istanbul University, Faculty of Medicine (1985)

PhD in Pediatric Surgery: Erciyes University (1992)

European Diploma in Pediatric Surgery: UEMS (2000)

M.Sc. in Health Management: Beykent University (2009)

Minor Specialization in Pediatric Urology: Ministry of Health, Turkey (2011)

Professional Experience:

2014-2016: Professor at Istanbul Medeniyet University, Faculty of Medicine

Areas of Interest:

Pediatric Urology

Gastrointestinal Surgery

Neonatal Surgery

Head and Neck Surgery in Children

Abdominal Laparoscopy

Liver Cyst

Inguinal Hernia Surgery

Treatment of conditions such as undescended testicles, varicoceles, Wilms tumor, and other pediatric urological disorders.

Courses and Certifications:

ECFMG Certificate: American Medical Doctor Equivalence Certificate

Additional Training: Various specialized courses and fellowships in pediatric surgery and urology

Professional Memberships:

European Society of Pediatric Urology

Turkish Society of Pediatric Surgery

Turkish Medical Association

National Pediatric Association

Turkish Society of Pediatric Urology

Laboratory Animal Science Association

Specializations

RIRS (Laser Stone Breaking in the Kidney)

Open-Closed Prostate Surgeries

Urological Cancer Surgeries

Urinary Incontinence Treatment

Infertility Treatment

Specializations

RIRS (Laser Stone Breaking in the Kidney)

Open-Closed Prostate Surgeries

Urological Cancer Surgeries

Urinary Incontinence Treatment

Infertility Treatment

Specializations

Prostate Diseases Treatment

Kidney, Urinary Tract, Bladder Stone and Tumor Treatment

Infertility, Treatment of Sexual Diseases

Urinary Incontinence Treatment

Circumcision, Undescended Testicle Treatment

EDUCATION:

2000 - SSK Okmeydanı Training and Research Hospital, .

1996 - Istanbul University, Istanbul Faculty of Medicine

EXPERIENCE:

2019 - Istanbul Medipol University Pendik Hospital

2017 - 2019 - Private Adatıp Kurtköy Hospital

2005 - 2017 - Private Avicenna Umut Hospital

2003 - 2005 - SSK Yalova Regional Hospital

2002 - 2003 - Kayseri Military Hospital

Education

• Kadir Has High School / 1992 - High School
• Dokuz Eylul University Faculty of Medicine / 1998 - Faculty of Medicine
• Göztepe Education and Research Hospital / 2004 - Neurology

Work Experience

• Dr. Siyami Ersek Gkdc Hospital Chest Surgery Clinic
• Göztepe Education and Research Hospital Neurology Clinic
• Samsun Bafra Kızılırmak Devler Hospital
• Erzincan Military Hospital
• Özel Ersoy Hospital, İstanbul
• Florence Nightingale Hospital, İstanbul
• Erdem Hospital, İstanbul
• Çanakkale Onsekiz Mart University Faculty of Medicine Neurology Clinic
• Emsey Hospital, İstanbul
• Adatıp Hospital İstanbul
• Central Hospital Ataşehir İstanbul
• Özel Yüzyıl Hospital Gebze Kocaeli

Areas of Interest

• Endorology
• Occupational Oncology Surgery
• Pediatric Orthology
• Gynecology

Courses-Seminars and Certificates Received

• Certification course for experimental animal use
• Training of the trainer certification course
• Occupational medicine certification course