Khor Y H, Steinfort D P, Buchanan M R, Gunawardana D, Antippa P, Irving L B
Department of Respiratory Medicine, Royal Melbourne Hospital, Grattan Street, Parkville, Victoria 3050, Australia.
Thorax. 2010 Feb;65(2):132-8, 187. doi: 10.1136/thx.2009.123828.