Lee Pyng, Tan Ze-Ying, Pham Thanh
Respiratory and Critical Care Medicine, National University Hospital, Singapore.
Department of Respiratory Medicine, Cho Ray Hospital, Ho Chi Minh City, Vietnam.
Thorax. 2018 Aug;73(8):792. doi: 10.1136/thoraxjnl-2017-211394. Epub 2018 Mar 21.