[1] Univ Tartu, Dept Obstet & Gynaecol, Inst Clin Med, Tartu, Estonia
[2] Competence Ctr Hlth Technol, CCHT, Tartu, Estonia
[3] Univ Tartu, Dept Pathophysiol, Inst Biomed & Translat Med, Tartu, Estonia
[4] Estonian Univ Life Sci, Inst Vet Med & Anim Sci, Tartu, Estonia
[5] Univ Helsinki, Helsinki, Finland
[6] Helsinki Univ Hosp, Dept Obstet & Gynecol, Helsinki, Finland
[7] Helsinki Univ Hosp, Reprod Med Unit, Helsinki, Finland
[8] Tallinn Univ Technol, Dept Chem & Biotechnol, Tallinn, Estonia
[9] Karolinska Inst, Stockholm, Sweden
[10] Karolinska Univ Hosp, Div Obstet & Gynecol, Dept Clin Sci Intervent & Technol, S-14186 Stockholm, Sweden