[1] Inova Fairfax Hosp, Falls Church, VA USA
[2] Univ Duisburg Essen, Ruhrlandklin, Univ Hosp, Essen, Germany
[3] Vanderbilt Univ, Med Ctr, Nashville, TN USA
[4] Royal Prince Alfred Hosp, Camperdown, NSW, Australia
[5] Univ Sydney, Sydney, NSW, Australia
[6] Hop Avicenne, APHP, Dept Pulmonol, Bobigny, France
[7] Boehringer Ingelheim Int GmbH, Ingelheim, Germany
[8] Royal Brompton & Harefield NHS Fdn Trust, Natl Inst Hlth Res Resp Biomed Res Unit, London, England
[9] Imperial Coll, Natl Heart & Lung Inst, London, England