[1] Univ Arizona, Hlth Sci Ctr, Tucson, AZ USA
[2] Univ Calif Los Angeles, David Geffen Sch Med, Los Angeles, CA 90095 USA
[3] AstraZeneca, Resp & Immunol, BioPharmaceut Med, Gaithersburg, MD USA
[4] AstraZeneca, Patient Centered Sci, Resp & Immunol, Gaithersburg, MD USA
[5] AstraZeneca, Late Stage Dev, Resp & Immunol, BioPharmaceut R&D,Biometr, Cambridge, England
[6] Amgen Inc, Global Dev, Thousand Oaks, CA USA
[7] Astrazeneca, Late Stage Dev Resp & Immunol, BioPharmaceut R&D, Cambridge, England