1. Department of Immunology, Institute of General and Molecular Pathology, University of Tartu, Ravila Street 19, Biomedicum, Tartu 50411, Estonia
2. Department of Obstetrics and Gynecology, University of Tartu, L. Puusepa 8, 51014 Tartu, Estonia
3. Competence Centre on Reproductive Medicine and Biology, Tiigi 61b, Tartu 50410, Estonia