“…The bulk of studies identified in this systematic review were retrospective cohort studies with <50 patients with SEOC (6-10, 12, 22, 24, 25, 28, 31, 34, 37, 38, 42, 44, 49, 51, 52, 55, 56, 58, 59, 61, 62, 65, 67-71), cases series of individual patients (13,23,35,36,43,45,66,73), and case reports (26,27,32,33,41,46,50,53,54,57,60,63,64,72,74,75). As expected, the heterogeneity among these studies with low numbers of patients was high.…”