[1] Ningbo First Hosp, Dept Infect Dis, Ningbo 315010, Zhejiang, Peoples R China
[2] Ningbo First Hosp, Dept Hepatol, Ningbo 315010, Zhejiang, Peoples R China
[3] Ningbo First Hosp, Dept Resp & Crit Care Med, Ningbo 315010, Zhejiang, Peoples R China
[4] Ningbo Univ, Sch Med, Ningbo, Zhejiang, Peoples R China