Chumak, Z. V., A. A. Zelinsky, and N. V. Shapoval. “Possible Mechanisms of Daylight Duration and Frequency of Endometrium Hyperplasia Development”. Journal of Education, Health and Sport 7, no. 1 (January 24, 2017): 449–459. Accessed March 23, 2025. https://apcz.umk.pl/JEHS/article/view/4274.