Tseng Jo-Chi, Hwang Cheng-Cheng, Shieh Wen-Bin
Division of Pulmonary Medicine, Department of Internal Medicine and Department of Respiratory Therapy, Chang Gung Memorial Hospital, 222, Mai-Chin Road, Keelung 20418, Taiwan.
Chest. 2010 Jan;137(1):228-31. doi: 10.1378/chest.09-0962.