Corrigendum: Isorhamnetin Inhibits Human Gallbladder Cancer Cell Proliferation and Metastasis via PI3K/AKT Signaling Pathway Inactivation - Zhai, Tianyu; Zhang, Xiaoyu; Hei, Zhenyu; Jin, Longyang; Han, Chao; Ko, Audrey Tsznam; Yu, Xiaofeng; Wang, Jiandong (Frontiers in Pharmacology, 2021)