About the Authors

June Kehlet Marthin

Affiliation Pediatric Pulmonary Service, Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark

Kim Gjerum Nielsen

kgn@dadlnet.dk

Affiliation Pediatric Pulmonary Service, Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KGN JKM. Performed the experiments: KGN. Analyzed the data: JKM KGN. Contributed reagents/materials/analysis tools: JKM KGN. Wrote the paper: JKM KGN.