title: In response to: Grunkemeier GL, Starr A. Alternatives to randomization in surgical studies.
authors.forename: D J
authors.initials: DJ
authors.lastname: Wheatley
mesh_terms: D015982:Bias; D006350:Heart Valve Prosthesis / Q000706:statistics & numerical data; D006801:Humans; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D012606:Scotland