title: Workshop 3--source of bias in case series, patient cohorts, and randomised controlled trials.
authors.affiliation: Clinical Epidemiology Group, Hong Kong Medical Journal.
authors.forename: Ignatius T S
authors.initials: IT
authors.lastname: Yu
authors.forename: Shelly L A
authors.initials: SL
authors.lastname: Tse
mesh_terms: D015982:Bias; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D011446:Prospective Studies; D016032:Randomized Controlled Trials as Topic; D012189:Retrospective Studies; D015983:Selection Bias