Diemienkova, I.H. and Udovikova, N.O. 2015. THE ROLE OF HEREDITY IN THE FORMATION OF THE PRIMARY OLIGOMENORRHEA. Actual Problems of Pediatrics, Obstetrics and Gynecology. 2 (Jul. 2015). DOI:https://doi.org/10.11603/24116-4944.2015.2.4785.