Corrigendum: Arachidonic acid in follicular fluid of PCOS induces oxidative stress in a human ovarian granulosa tumor cell line (KGN) and upregulates GDF15 expression as a response - Ma, Yalan; Zheng, Lianwen; Wang, Yeling; Gao, Yiyin; Xu, Ying (Frontiers in Endocrinology, 2022)