Gastrointestinal endoscopy.
D004378:Duodenal Diseases / Q000175:diagnosis; D004724:Endoscopy; D004935:Esophageal Diseases / Q000175:diagnosis; D004938:Esophageal Neoplasms / Q000628:therapy; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D005773:Gastroscopy; D006801:Humans; D053685:Laser Therapy; D010182:Pancreatic Diseases / Q000175:diagnosis; D013272:Stomach Diseases / Q000175:diagnosis / Q000628:therapy