title: Critical factors for credibility in clinical trials: Comments on Aickin's "Beyond randomization".
authors.affiliation: Klinikum der Universitat, Institut fur Umweltmedizin und Krankenhaushygiene, Freiburg, Germany. walach@ukl.uni-freiburg.de
authors.forename: Harald
authors.initials: H
authors.lastname: Walach
mesh_terms: D002985:Clinical Protocols; D000529:Complementary Therapies / Q000379:methods*; D005163:Factor Analysis, Statistical; D006801:Humans; D018579:Patient Selection; D016032:Randomized Controlled Trials as Topic / Q000379:methods* / Q000592:standards; D012107:Research Design / Q000592:standards