title: Regarding "Inherent problems with randomized clinical trials with observational/no treatment arms".
authors.forename: Frank A
authors.initials: FA
authors.lastname: Lederle
mesh_terms: D017544:Aortic Aneurysm, Abdominal / Q000601:surgery*; D019317:Evidence-Based Medicine; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D015203:Reproducibility of Results; D012107:Research Design; D016896:Treatment Outcome; D014656:Vascular Surgical Procedures