Author Correction: Revealing the pharmacological mechanisms of nao-an dropping pill in preventing and treating ischemic stroke via the PI3K/Akt/eNOS and Nrf2/HO-1 pathways - Chen Wang; Zhe-Ming Xiong; You-Quan Cong; Zi-Yao Li; Yi Xie; Ying-Xiao Wang; Hui-Min Zhou; Yan-Fang Yang; Jing-Jing Liu; He-Zhen Wu (Scientific Reports)