Boonsarngsuk Viboon, Suwatanapongched Thitiporn, Korrungruang Potjanee, Raweelert Pensupa
Department of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
Respir Care. 2012 Jul;57(7):1191-4. doi: 10.4187/respcare.01459. Epub 2012 Jan 23.