Professor Qiao Yuandong received his MD. and PhD. degrees from Harbin Medical University and finished his Postdoctral training in 2010. He is experts in population genetics, DNA damage-repair gene and HIV-1 infection. His group was focus on human genetic diversity and the association analysis of genetic variants with common diseases. Now, they have collected matched case and control samples and carried out the study to investigate the association of genetic variants in HIV-1 infection, especially interest in DNA damage-repair gene with AIDS.