[1] Northwestern Univ, Feinberg Sch Med, Chicago, IL 60611 USA
[2] Showa Univ, Sch Med, Dept Med, Div Resp Med & Allergol, Tokyo, Japan
[3] Univ Calif Los Angeles, David Geffen Sch Med, Los Angeles, CA 90095 USA
[4] Autonomous Univ Barcelona, Corporacio Sanitaria Parc Tauli, Pulm Serv, Barcelona, Spain
[5] Sanofi, Cambridge, MA USA
[6] Regeneron Pharmaceut Inc, 777 Old Saw Mill River Rd, Tarrytown, NY 10591 USA
[7] Sanofi, Bridgewater, NJ USA