Associations of HLA-DP variants with hepatitis B virus infection in southern and northern Han Chinese populations: a multicenter case-control study. oleh Jin Li, Daguo Yang, Yongwen He, Mengyi Wang, Zirong Wen, Lifeng Liu, Jinjian Yao, Koichi Matsuda, Yusuke Nakamura, Jinling Yu, Xiaorui Jiang, Shuzhen Sun, Qing Liu, Xiang Jiang, Qilong Song, Man Chen, Hong Yang, Feng Tang, Xiaowen Hu, Jing Wang, Ying Chang, Xingxing He, Yuan Chen, Jusheng Lin