Hong Kong Medical Journal Clinical Epidemiology Workshop series Workshop 1—Dissection of a medical journal paper Workshop 2—General approach to critical appraisal of a medical journal paper Workshop 3—Source of bias in case series, patient cohorts, and randomised controlled trials Workshop 4—Sources of bias in case-referent studies Workshop 5—Sources of bias in cohort studies Workshop 6—Sources of bias in cross-sectional studies; summary on sources of bias for different study designs Workshop 7—Appraising a study on diagnosis Workshop 8—Appraising a study on therapy Workshop 9—Appraising a study on prognosis Workshop 10—Appraising a study on risk factors or aetiology Workshop 11—Sources of bias in systematic reviews with or without meta-analysis Workshop 12—Appraising a systematic review with meta-analysis