1. Department of AIDS Treatment and Research Center, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou 45000, China
2. National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
3. School of International Education, Zhengzhou Railway Vocational and Technical College, Zhengzhou 450000, China
4. Key Laboratory of Viral Diseases Prevention and Treatment of Traditional Chinese Medicine of Henan Province, Zhengzhou 450000, China