About the Authors

Juerg Barben

juerg.barben@kispisg.ch

Affiliation Department of Paediatric Pulmonology & Allergology, Children’s Hospital, St. Gallen, Switzerland

Marie-Pierre F. Strippoli

Affiliation Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland

Daniel Trachsel

Affiliation Department of Pulmonology and Intensive Care, University Children’s Hospital Basel, Basel, Switzerland

Barbara Schiller

Affiliation Department of Paediatric Pulmonology & Allergology, Children’s Hospital, St. Gallen, Switzerland

Juerg Hammer

Affiliation Department of Pulmonology and Intensive Care, University Children’s Hospital Basel, Basel, Switzerland

Claudia E. Kuehni

Affiliation Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland

Competing Interests

The authors would like to declare commercial funder AstraZeneca (Switzerland) as a competing interest. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Editing and review of the manuscript: JB MPS DT BS JH CEK. Conceived and designed the experiments: JB DT JH CEK. Performed the experiments: JB DT BS JH. Analyzed the data: MPS CEK. Contributed reagents/materials/analysis tools: JB. Wrote the paper: JB MPS CEK.