Iin Rahmania Inayatillah, Elisna Syahrudin, Agus Dwi Susanto Departemen Pulmonologi dan Ilmu Kedokteran Respirasi Fakultas Kedokteran Universitas Indonesia,RS Persahabatan, Jakarta Abstract Background: Smoking has been considered as a prime cause of carbon monoxide (CO) exposures. Exhaled air CO measurement is a reliable indicator for smoking status. This study aimed to measure exhaled air CO levels […]