title: The return of "negative" trials?
authors.forename: Mario L
authors.initials: ML
authors.lastname: de Lemos
mesh_terms: D001281:Atrial Fibrillation / Q000401:mortality / Q000517:prevention & control*; D015982:Bias; D006339:Heart Rate; D006801:Humans; D010349:Patient Compliance; D016032:Randomized Controlled Trials as Topic / Q000592:standards*; D012107:Research Design / Q000592:standards*; D018401:Sample Size