title: Instrumental variable analyses for observational comparative effectiveness research: the paired availability design.
authors.forename: Stuart G
authors.initials: SG
authors.lastname: Baker
authors.forename: Karen S
authors.initials: KS
authors.lastname: Lindeman
mesh_terms: D057186:Comparative Effectiveness Research / Q000379:methods*; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D064887:Observational Studies as Topic / Q000379:methods*