The University of Sydney - Department of Respiratory and Sleep Medicine, John Hunter Hospital, The University of Sydney - Royal Prince Alfred Hospital, South Western Sydney Local Health District - Liverpool Hospital, Macquarie University, The University of Sydney - Royal Prince Alfred Hospital, The University of Sydney - Royal Prince Alfred Hospital, University of Michigan at Ann Arbor - Department of Pathology, The University of Sydney - Royal Prince Alfred Hospital, The University of Sydney - Royal Prince Alfred Hospital, The University of Sydney - Central Clinical School, Macquarie University, The University of Sydney - Royal Prince Alfred Hospital, The University of Sydney - Royal Prince Alfred Hospital, The University of Sydney - Royal Prince Alfred Hospital, The University of Sydney - Royal Prince Alfred Hospital, The University of Western Australia - Fiona Stanley Hospital, The University of Western Australia - Fiona Stanley Hospital, The University of Sydney, Royal North Shore Hospital, The University of Sydney - Westmead Hospital, Nepean Hospital, University of Newcastle - Hunter Medical Research Institute, University of Washington - Interstitial Lung Disease Clinic and The University of Sydney - Royal Prince Alfred Hospital