About the Authors
- Andreas Tornevi
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* E-mail: andreas.tornevi@umu.se
Affiliation Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Sweden
- Olof Bergstedt
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Affiliation Department of Civil and Environmental Engineering, Water Environment Technology, Chalmers University of Technology, Gothenburg, Sweden
- Bertil Forsberg
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Affiliation Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Sweden
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: AT OB BF. Analyzed the data: AT. Wrote the paper: AT. Choose statistical methods: AT. Evaluated results: AT OB BF. Contributed with data material: OB. Approved the final manuscript: AT OB BF.