1. Key Laboratory of AIDS Immunology of Ministry of Health, Department of Laboratory Medicine, The First Hospital of China Medical University, Shenyang 110001, China
2. Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310000, China
3. National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
4. Liaoning Provincial CDC, Shenyang 110005, China