About the Authors
- Sven Drefahl
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* E-mail: sven.drefahl@sociology.su.se
Affiliations Demography Unit, Department of Sociology, Stockholm University, Stockholm, Sweden, Institute of Environmental Medicine, Division of Epidemiology, Karolinska Institutet, Stockholm, Sweden
- Anders Ahlbom
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Affiliation Institute of Environmental Medicine, Division of Epidemiology, Karolinska Institutet, Stockholm, Sweden
- Karin Modig
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Affiliation Institute of Environmental Medicine, Division of Epidemiology, Karolinska Institutet, Stockholm, Sweden
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: SD AA KM. Analyzed the data: SD. Wrote the paper: SD AA KM.