For citations:

Kalashnikova M.F., Likhodey N.V., Tiulpakov A.N., Fedorova E.V., Bryunin D.V., Bakhvalova A.A., Glushakova M.A., Smirnova S.A., Fadeyev V.V. Virilizing ovarian tumor: the challenges of differential diagnosis. Problems of Endocrinology. 2019;65(4):273-277. https://doi.org/10.14341/probl10222