About the Authors

Milla Mukka

Roles Data curation, Formal analysis, Writing – original draft

milla.mukka@helsinki.fi

Affiliation University of Helsinki, Helsinki, Finland

Samuli Pesälä

Roles Formal analysis, Supervision, Writing – review & editing

Affiliation University of Helsinki, Helsinki, Finland

Pekka Mustonen

Roles Resources

Affiliation Duodecim Publishing Company Ltd, Helsinki, Finland

Minna Kaila

Roles Supervision

Affiliation Clinicum, University of Helsinki, Helsinki, Finland

Otto Helve

Roles Supervision

Affiliations Department of Health Security, Finnish Institute for Health and Welfare, Helsinki, Finland, Paediatrics Research Center, Children’s Hospital, Helsinki University Hospital and the University of Helsinki, Helsinki, Finland

Competing Interests

The authors have read the journal’s policy and have the following competing interests: MK has held various trustee positions in the Finnish Medical Society Duodecim since the late 1990s. OH has held various trustee positions in the Finnish Medical Society Duodecim and Duodecim Publishing Company Ltd since 2009 and is a partner at iHealth Finland Ltd. The other authors have no competing interests. This does not alter our adherence to PLOS ONE policies on sharing data and materials.