[1] Hannover Med Sch, Klin Pneumol, D-30625 Hannover, Germany
[2] Royal Brompton Hosp London, Resp Med, London, England
[3] Arvard Med Sch Boston, Boston, MA USA
[4] Univ Calif, David Geffen Sch Med, Davis, CA USA
[5] Astrazeneca, Cambridge, England
[6] Astrazeneca, Biopharmaceut Med, Resp & Immunol, Cambridge, England
[7] Amgen Inc, Global Med Affairs, Thousand Oaks, CA USA