title: [Introduction to randomized trials: attrition bias].
authors.affiliation: Service de gynécologie-obstétrique, médecine fœtale et reproduction humaine, CHRU Bretonneau, 2, boulevard Tonnellé, 37044 Tours cedex, France. emmanuel.simon@univ-tours.fr
authors.forename: E G
authors.initials: EG
authors.lastname: Simon
authors.forename: C J
authors.initials: CJ
authors.lastname: Fouché
authors.forename: F
authors.initials: F
authors.lastname: Perrotin
mesh_terms: D015982:Bias; D005602:France; D006801:Humans; D010352:Patient Dropouts; D016032:Randomized Controlled Trials as Topic / Q000592:standards*; D012107:Research Design; D012307:Risk Factors