Institute of Infectious Disease, First Affiliated Hospital of Zhejiang University, Hangzhou 310003, China;
Institute of Infectious Disease, First Affiliated Hospital of Zhejiang University, Hangzhou 310003, China;
Institute of Infectious Disease, First Affiliated Hospital of Zhejiang University, Hangzhou 310003, China;
Institute of Infectious Disease, First Affiliated Hospital of Zhejiang University, Hangzhou 310003, China;
co-infection; drug addiction; human immunodeficiency virus; hepatitis virus;