Nykonenko, A. O. ., and B. S. . Havrylenko. “Pelvic Congestion Syndrome: Historical Aspects and a Modern View on the Problem (a Literature Review)”. Zaporozhye Medical Journal, vol. 23, no. 5, Sept. 2021, pp. 723-9, doi:10.14739/2310-1210.2021.5.224621.