For citations:

Bershtein L.M., Tsyrlina E.V., Meshkova I.E., Poroshina T.E., Novik V.I., Krasil'nikova L.A., Kovalenko I.G. The experience of using biguanide siofor with polycystic ovary. Problems of Endocrinology. 2004;50(1):41-44. (In Russ.) https://doi.org/10.14341/probl11303