About the Authors

Päivi Kolu

paivi.kolu@uta.fi

Affiliation UKK Institute for Health Promotion, Tampere, Finland

Jani Raitanen

Affiliations UKK Institute for Health Promotion, Tampere, Finland, School of Health Sciences, University of Tampere, Tampere, Finland

Pekka Rissanen

Affiliation School of Health Sciences, University of Tampere, Tampere, Finland

Riitta Luoto

Affiliations UKK Institute for Health Promotion, Tampere, Finland, National Institute for Health and Welfare, Department of Children, Young People and Families, Helsinki, Finland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Revision and comment: PR RL. Conceived and designed the experiments: PK JR PR RL. Performed the experiments: PK JR. Analyzed the data: JR. Wrote the paper: PK.