1. Guanqiao Li is a postdoctoral fellow at the Comprehensive AIDS Research Center and Center for Global Health and Infectious Diseases at the School of Medicine of Tsinghua University, Beijing, China.
2. Yan Jiang is director of the National HIV Reference Laboratory at the Chinese Center for Disease Control and Prevention, Beijing, China.
3. Linqi Zhang is professor and director of the Comprehensive AIDS Research Center and the Center for Global Health and Infectious Diseases at the School of Medicine of Tsinghua University, Beijing, China.