1. The First Clinical Medical School, Henan University of Chinese Medicine, Zhengzhou 45000, China
2. Center for AIDS/STD Control and Prevention, Center for Disease Control and Prevention of Henan Province, Zhengzhou 45000, China
3. Department of Acquired Immune Deficiency Syndrome Treatment and Research Center, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 45000, China