Prof. Dr. Seyfettin Köklü is a specialist in internal medicine and gastroenterology. He graduated from Hacettepe University Faculty of Medicine in 1996. He completed his residency training at Department of Internal Medicine, Hacettepe University Faculty of Medicine in 2001. He completed his gastroenterology subspecialty training in Department of Gastroenterology, Turkey Yüksek İhtisas Hospital in 2004. He founded and managed the Gastroenterology Clinic at Ankara Training and Research Hospital. He worked as a faculty member at Department of Internal Medicine, Hacettepe University Faculty of Medicine,. He has over 350 articles published in national and international scientific journals. Areas of interest; esophagus, stomach, small intestine, colon and rectum, pancreas, gallbladder, bile ducts and liver diseases, diagnosis and treatment of digestive system disorders, endoscopy, colonoscopy and endoscopic retrograde cholangiopancreatography (ERCP). He is fluent in English.