[1] Amgen Inc, Ctr Observat Res, Thousand Oaks, CA USA
[2] Amgen Inc, Hlth Econ & Outcomes Res, Thousand Oaks, CA USA
[3] Amgen Inc, Global Med Affairs, Thousand Oaks, CA USA
[4] AstraZeneca, Biopharmaceut Med, Resp & Immunol, Gaithersburg, MD USA
[5] AstraZeneca, Payer Evidence, Gaithersburg, MD USA
[6] Pulm & Alergy Associates, E Hanover, NJ USA
[7] Allergy & Asthma Care Long Isl, New York, NY USA