Funding for this research was provided by:
Eesti Teadusagentuur (IUT34-12)
Article History
Received: 2 April 2019
Accepted: 6 June 2019
First Online: 26 June 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Review Committee of Human Research of the University of Tartu, Estonia (permissions no 117/9, 6.06.2003; 146/18, 27.02.2006; 212/M-32, 09.03.2012; 286/M-18, 15.10.2018), and it was carried out in compliance with the Helsinki Declaration. Written informed consent to participate in the study was obtained from each individual prior to recruitment. All study participants were recruited and the study material was collected at the Women’s Clinic of Tartu University Hospital (TUH), Estonia, in 2003–2012. All participants were of white European ancestry and living in Estonia. All methods were carried out in accordance with approved guidelines.
: Not applicable
: The authors declare that they have no competing interests.
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