Retraction Notice to: lncRNA PVT1/MicroRNA-17-5p/PTEN Axis Regulates Secretion of E2 and P4, Proliferation, and Apoptosis of Ovarian Granulosa Cells in PCOS - Gelin Liu; Shengxian Liu; Guanlin Xing; Fang Wang (Elsevier, 2022)