1. Key Laboratory of AIDS Immunology of National Health and Family Planning Commission; Department of Laboratory Medicine; The First Affiliated Hospital, China Medical University; Shenyang P.R. China
2. Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases; Hangzhou China
3. National Center for AIDS/STD Control and Prevention; Chinese Center for Disease Control and Prevention (CDC); Beijing China
4. Georgetown University School of Medicine; Washington DC
5. National Center for Clinical Laboratories; Beijing Hospital; Beijing China