作者机构:[1]Department of Infectious Diseases, Peking University First Hospital, Beijing 100034, China
相关基金:This study was supported by the grants from the 12th Five-Year Plan (No.2012ZX10002 003-004-003,No.2013 ZX10002004-001-003) and Beijing Municipal Science and Technology Commission of Major Projects (No.D121100003912003).
Correspondence to: Prof. Xu Xiaoyuan, Department of Infectious Diseases, Peking University First Hospital, Beijing 100034, China (Tel: 86-13001185762. Fax: 86-10-83575787. Email: yangpin@ public3.bta.net.cn)