Gastroduodenal endoscopy.
D004378:Duodenal Diseases / Q000175:diagnosis*; D004724:Endoscopy / Q000592:standards*; D005762:Gastroenterology; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D005773:Gastroscopy / Q000592:standards*; D013502:General Surgery; D007388:Internal Medicine; D007400:Interprofessional Relations; D008511:Medicine; D008722:Methods; D013038:Specialization