[1] Univ Oxford, Nuffield Dept Med, Oxford, England
[2] GlaxoSmithKline, Brentford, England
[3] Barts & London Queen Marys Sch Med & Dent, London, England
[4] North Tyneside Gen Hosp, North Shields, England
[5] Newcastle Univ, Newcastle Upon Tyne, Tyne & Wear, England
[6] Temple Univ, Lewis Katz Sch Med, Philadelphia, PA 19122 USA
[7] Univ Alabama Birmingham, Lung Hlth Ctr, Div Pulm Allergy & Crit Care Med, Birmingham, AL USA
[8] Royal Devon & Exeter Hosp, Dept Resp Med, Exeter, Devon, England
[9] Univ Michigan, Pulm & Crit Care, Ann Arbor, MI 48109 USA
[10] Veramed Ltd, Twickenham, England
[11] GlaxoSmithKline, Res Triangle Pk, NC USA
[12] Univ Copenhagen, Dept Publ Hlth, Copenhagen, Denmark
[13] Herlev & Gentofte Hosp, Dept Med, Herlev, Denmark
[14] GlaxoSmithKline, Uxbridge, Middx, England
[15] GlaxoSmithKline, Collegeville, PA USA
[16] Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA
[17] UCL, UCL Resp, London, England
[18] Univ Leicester, Leicester, Leics, England
[19] New York Presbyterian Weill Cornell Med Ctr, New York, NY USA
[20] Johns Hopkins Med, Div Pulm & Crit Care Med, Baltimore, MD USA
[21] Univ Manchester, Manchester, Lancs, England