title: Are randomized clinical trials of surgical procedures feasible?
authors.forename: T W
authors.initials: TW
authors.lastname: Langfitt
mesh_terms: D002548:Cerebral Revascularization; D002986:Clinical Trials as Topic; D006801:Humans; D009493:Neurosurgery; D011446:Prospective Studies; D011897:Random Allocation