Baseline characteristics of outpatients in the Korea National Health Insurance Service–National Sample Cohort according to medication use in the first years of the study, 2002–2003, and the recent years of the study, 2012–2013.

Abstract

Baseline characteristics of outpatients in the Korea National Health Insurance Service–National Sample Cohort according to medication use in the first years of the study, 2002–2003, and the recent years of the study, 2012–2013.</p