About the Authors

Sirkku Karinen

Affiliation Sirkku Karinen Institute of Biomedicine and Genome-Scale Biology Research Program, University of Helsinki, Helsinki, Finland

Tuomas Heikkinen

Affiliation Tuomas Heikkinen Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Helsinki, Finland

Heli Nevanlinna

Affiliation Heli Nevanlinna Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Helsinki, Finland

Sampsa Hautaniemi

sampsa.hautaniemi@helsinki.fi

Affiliation Sampsa Hautaniemi Institute of Biomedicine and Genome-Scale Biology Research Program, University of Helsinki, Helsinki, Finland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SK HN SH. Analyzed the data: SK SH. Contributed reagents/materials/analysis tools: SK. Wrote the paper: SK TH HN SH.