title: Sources of bias in clinical trials.
authors.affiliation: Statistics and Research Design, Corfu, Greece.
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Pandis
mesh_terms: D015982:Bias; D002986:Clinical Trials as Topic / Q000706:statistics & numerical data*; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D010352:Patient Dropouts; D017594:Publication Bias; D016032:Randomized Controlled Trials as Topic / Q000706:statistics & numerical data; D015983:Selection Bias; D035501:Uncertainty