About the Authors

Satu Pirilä

satu.pirila@hus.fi

Affiliation Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland

Mervi Taskinen

Affiliation Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland

Heli Viljakainen

Affiliation Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland

Merja Kajosaari

Affiliation Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland

Maila Turanlahti

Affiliation Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland

Ulla M. Saarinen-Pihkala

Affiliation Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland

Outi Mäkitie

Affiliation Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SP MT MK MT US-P OM. Performed the experiments: SP. Analyzed the data: SP HV OM. Contributed reagents/materials/analysis tools: SP HV OM. Wrote the paper: SP MT HV MK MT US-P OM.