title: Variation in outcome of surgical procedures.
authors: T
authors: T
authors: Rockall
authors: M
authors: M
authors: Emberton
authors: H B
authors: HB
authors: Devlin
mesh_terms: D006471:Gastrointestinal Hemorrhage / Q000401:mortality; D006801:Humans; D008297:Male; D008485:Medical Audit; D011379:Prognosis; D011468:Prostatectomy / Q000401:mortality; D013514:Surgical Procedures, Operative; D016896:Treatment Outcome