[1]Shanghai Publ Hlth Clin Ctr, Dept Infect Dis, Shanghai, Peoples R China;
[2]Fudan Univ, Dept Infect Dis, Huashan Hosp, Shanghai, Peoples R China;
[3]Mem Sloan Kettering Canc Ctr, Dept Internal Med, Dept Lab Med, 1275 York Ave, New York, NY 10021 USA;
[4]Cornell Univ, Dept Pathol & Lab Med, Weill Med Coll, New York, NY 10021 USA