About the Authors
- Sari Räisänen
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* E-mail: shraisan@student.uef.fi
Affiliation Department of Obstetrics and Gynaecology, Kuopio University Hospital, Kuopio, Finland
- Mika Gissler
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Affiliations National Institute for Health and Welfare (THL), Helsinki, Finland, Nordic School of Public Health, Gothenburg, Sweden
- Juho Saari
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Affiliation Kuopio Welfare Research Centre (KWRC), Department of Social Sciences, The University of Eastern Finland, Kuopio, Finland
- Michael Kramer
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Affiliation Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
- Seppo Heinonen
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Affiliation Department of Obstetrics and Gynaecology, Kuopio University Hospital, Kuopio, Finland
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: SR MG JS MK SH. Performed the experiments: SR MG JS MK SH. Analyzed the data: SR MG SH. Wrote the paper: SR MG JS MK SH.