Enhance your knowledge of GI medicine with case-based questions to test your recall, interpretation and problem-solving skills at $5.99/chapter. Or purchase all 16 chapters for $89.99. Sample 16 questions free when you install the app. NOTE: You can purchase all 16 Chapters at once under Settings in the App or purchase them one by one by selecting any question within a Chapter of interest. For over 15 years, Digestive Diseases Self-Education Program® (DDSEP) has been the go-to self-education resource for gastroenterologists in all stages of their careers. It helps physicians stay current on the latest advances in the fields of gastroenterology, hepatology and nutrition, and prepare for the ABIM GI board certification and recertification examinations. DDSEP's flexible format is also ideal for obtaining continuing medical education credits conveniently and efficiently.