[Editorial: Problems in the performance of prospective controlled trials about surgical treatment procedures (author's transl)].
D001294:Attitude to Health; D003365:Costs and Cost Analysis; D005860:Germany, West; D006801:Humans; D008722:Methods; D010817:Physician-Patient Relations; D011182:Postoperative Care; D011300:Preoperative Care; D011446:Prospective Studies; D013514:Surgical Procedures, Operative
Editorial: Probleme bei der Durchführung einer prospektiven, kontrollierten Studie über chirurgische Behandlungsmethoden.