Chung Chae Uk, Park Dong Il, Lee Choong Sik, Jung Sung Soo
Department of Internal Medicine, Division of Pulmonology, College of Medicine, Chungnam National University, Deajeon 301-721, Korea.
Chin Med J (Engl). 2015 Mar 5;128(5):702-3. doi: 10.4103/0366-6999.151695.