Dewi Manihuruk, Pandiaman Pandia, Amira Tarigan, Putri Chairani Eyanoer Departemen Pulmonologi dan Kedokteran Respirasi, Fakultas Kedokteran Universitas Sumatera Utara, RSUP H. Adam Malik Medan Abstract Background: COPD is considered as a complex disease and global problem that is predicted to be the third most common cause of death by 2030. The 2014 GOLD (Global Strategy for […]