1. Aaron Diamond AIDS Research Center, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA.
2. Columbia University Mailman School of Public Health, Department of Biostatistics, New York, New York, USA.
3. Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.
4. NHC Key Laboratory of AIDS Immunology (China Medical University), Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China.
5. Youan-Tian Yuan Studio, Beijing, China.
6. Division of Infectious Disease, Chongqing Public Health Medical Center, Chongqing, China.