Abstract
Xu, ZJ; Pan, JJ; Qian, Y
Qian, Y (corresponding author), Zhejiang Univ, Dept Gen Practice, Sch Med, Sir Run Run Shaw Hosp, 3 Qingchun E Rd, Hangzhou 310016, Zhejiang, Peoples R China.
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 2020; 323 (4): 378