EARLY FORMS OF PELVIC ORGAN PROLAPSE: CLINICAL SIGNIFICANCE, ETIOLOGY AND PATHOGENESIS СтатьяGasparov A.S., Kolesnikova S.A., Dubinskaya E.D., Babicheva I.A., Rad'kova M.V.Voprosy Ginekologii, Akusherstva i Perinatologii. Том 15. 2016. С. 43-51