title: Methods in pharmacoepidemiology: time-varying drug effects revisited.
authors.affiliation: Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02120, USA. schneeweiss@post.harvard.edu
authors.forename: Sebastian
authors.initials: S
authors.lastname: Schneeweiss
mesh_terms: D016022:Case-Control Studies; D064420:Drug-Related Side Effects and Adverse Reactions; D006801:Humans; D017891:Pharmacoepidemiology / Q000379:methods*; D016016:Proportional Hazards Models; D013997:Time Factors