About the Authors

Miikka Korja

mkorja@mqneurosurgery.com

Affiliations Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland, Neurosurgery Unit, Australian School of Advanced Medicine, Macquarie University, Sydney, New South Wales, Australia

Karri Silventoinen

Affiliation Population Research Unit, Department of Social Research, University of Helsinki, Helsinki, Finland

Tiina Laatikainen

Affiliations Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland, Hospital District of North Karelia, Joensuu, Finland

Pekka Jousilahti

Affiliation Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland

Veikko Salomaa

Affiliation Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland

Juha Hernesniemi

Affiliation Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland

Jaakko Kaprio

Affiliations Department of Public Health, University of Helsinki, Helsinki, Finland, Department of Mental Health and Substance Abuse Services, National Institute for Health and Welfare, Helsinki, Finland, Institute for Molecular Medicine FIMM, Helsinki, Finland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MK JK. Performed the experiments: MK KS JK. Analyzed the data: MK KS JK. Contributed reagents/materials/analysis tools: TL PJ VS JK. Wrote the paper: MK JK. Critical revision of the paper: KS TL PJ VS JH.