Fundamentals of surgery. 4. Surgical emergencies.
D000006:Abdomen, Acute / Q000601:surgery*; D001064:Appendicitis / Q000601:surgery; D002764:Cholecystitis / Q000601:surgery; D006801:Humans; D010438:Peptic Ulcer Hemorrhage / Q000601:surgery; D010439:Peptic Ulcer Perforation / Q000601:surgery