title: Immortal time bias in cohort studies of kidney transplant recipients.
authors.forename: S J
authors.initials: SJ
authors.lastname: Kim
mesh_terms: D015331:Cohort Studies; D003327:Coronary Disease / Q000150:complications; D006801:Humans; D007676:Kidney Failure, Chronic / Q000150:complications / Q000601:surgery; D016030:Kidney Transplantation; D015996:Survival Rate; D013997:Time Factors