RETRACTION: CGVD: a genomic variation database for Chinese populations. Issue Volume 48:Issue D1(2020) (16th November 2019) - Zeng, Jingyao; Yuan, Na; Zhu, Junwei; Pan, Mengyu; Zhang, Hao; Wang, Qi; Shi, Shuo; Du, Zhenglin; Xiao, Jingfa