CURRENT KNOWLEDGE ON ENDOMETRIOSIS ETIOLOGY: A SYSTEMATIC REVIEW OF LITERATURE Article Mikhaleva L.M., Radzinsky V.E., Orazov M.R., Khovanskaya T.N., Sorokina A.V., Mikhalev S.A., Volkova S.V., Shustova V.B., Sinelnikov M.Y. International Journal of Women's Health. Dove Medical Press Ltd. Vol. 13. 2021. P. 525-537