Corrigendum: COVIEdb: A Database for Potential Immune Epitopes of Coronaviruses - Wu, Jingcheng; Chen, Wenfan; Zhou, Jingjing; Zhao, Wenyi; Sun, Yisheng; Zhu, Hanping; Yao, Pingping; Chen, Shuqing; Jiang, Jianmin; Zhou, Zhan (Frontiers in Pharmacology, 2021)