[1] Fdn CIDEA, Allergy & Resp Res Unit, Buenos Aires, DF, Argentina
[2] Univ Groningen, Univ Med Ctr Groningen, Dept Pulmonol, Groningen, Netherlands
[3] Groningen Res Inst Asthma & COPD, Groningen, Netherlands
[4] Univ Toronto, Div Resp Med, Dept Med, Toronto, ON, Canada
[5] Univ Cape Town, Div Pulmonol, Cape Town, South Africa
[6] Univ Cape Town, UCT Lung Inst, Cape Town, South Africa
[7] Novartis Pharma AG, Basel, Switzerland
[8] Novartis Pharmaceut, E Hanover, NJ USA