About the Authors

Niina Lietzén, Tiina Öhman, Tuula A. Nyman
Institute of Biotechnology, University of Helsinki, Helsinki, Finland

Johanna Rintahaka, Sampsa Matikainen
Finnish Institute of Occupational Health, Helsinki, Finland

Ilkka Julkunen
National Institute for Health and Welfare, Helsinki, Finland

Tero Aittokallio
Department of Mathematics, University of Turku, Turku, Finland

Corresponding Author

tuula.nyman@helsinki.fi

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SM TAN. Performed the experiments: NL TÖ JR. Analyzed the data: NL TÖ TA SM TAN. Contributed reagents/materials/analysis tools: IJ TA. Wrote the paper: NL SM TAN.