Han Fei, Guo Bo
Department of Dermatology, Suqian First Hospital, Suqian City, Jiangsu Province, China
Department of Dermatology, Tongxiang Dermatology Hospital, Tongxiang City, Zhejiang Province, China.
BMJ. 2020 Sep 16;370:m2209. doi: 10.1136/bmj.m2209.