About the Authors

Terhi Tapiainen

terhi.tapiainen@oulu.fi

Affiliations Department of Pediatrics, Oulu University Hospital, Oulu, Finland, Department of Pediatrics, University of Oulu, Oulu, Finland

Niko Paalanne

Affiliations Department of Pediatrics, Oulu University Hospital, Oulu, Finland, Department of Pediatrics, University of Oulu, Oulu, Finland

Tuula Arkkola

Affiliation Department of Pediatrics, Oulu University Hospital, Oulu, Finland

Marjo Renko

Affiliations Department of Pediatrics, Oulu University Hospital, Oulu, Finland, Department of Pediatrics, University of Oulu, Oulu, Finland

Tytti Pokka

Affiliations Department of Pediatrics, Oulu University Hospital, Oulu, Finland, Department of Pediatrics, University of Oulu, Oulu, Finland

Tarja Kaijalainen

Affiliation National Institute for Health and Welfare, Oulu, Finland

Matti Uhari

Affiliations Department of Pediatrics, Oulu University Hospital, Oulu, Finland, Department of Pediatrics, University of Oulu, Oulu, Finland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TT MR MU. Performed the experiments: TK TA TT. Analyzed the data: TP NP TT. Contributed reagents/materials/analysis tools: TK. Wrote the paper: NP TT MU.