About the Authors

Mervi Kreus

Roles Investigation, Visualization, Writing – original draft

mervi.kreus@oulu.fi

Affiliations Research Unit of Internal Medicine, University of Oulu, Oulu, Finland, Medical Research Center Oulu, Oulu University Hospital, Oulu, Finland

Siri Lehtonen

Roles Investigation, Writing – original draft

Affiliations Medical Research Center Oulu, Oulu University Hospital, Oulu, Finland, Department of Obstetrics and Gynecology, Oulu University Hospital, Oulu, Finland

Sini Skarp

Roles Formal analysis, Writing – review & editing

Current address: Research Unit of Biomedicine, Department of Pharmacology and Toxicology, University of Oulu, Oulu, Finland

Affiliation Northern Finland Birth Cohorts, Infrastructure for Population Studies, Faculty of Medicine, University of Oulu, Oulu, Finland

Riitta Kaarteenaho

Roles Conceptualization, Funding acquisition, Investigation, Resources, Writing – original draft

Affiliations Research Unit of Internal Medicine, University of Oulu, Oulu, Finland, Medical Research Center Oulu, Oulu University Hospital, Oulu, Finland

Competing Interests

I have read the journal’s policy and the authors of this manuscript have the following competing interests: R.K. has received a congress travel stipend from Orion Pharma, a consulting fee from Boehringer-Ingelheim, and lecture fees from Roche and Boehringer-Ingelheim. This does not alter our adherence to PLOS ONE policies on sharing data and materials.