TY - Front. Med. A1 - Jiuyang Xu, Yijun Chen, Hao Chen, Bin Cao T1 - 2019 novel coronavirus outbreak: a quiz or final exam? Y1 - 2020-04-15 JF - Frontiers of Medicine JO - Front. Med. SP - 225 EP - 228 VL - 14 IS - 2 UR - https://journal.hep.com.cn/fmd N1 - 10.1007/s11684-020-0753-1 ER -