Chen, Xi MD*; Li, Xingli PhD†; Qin, Biyun MD*; Zheng, Jun MD*; He, Jianmei MD*; Wang, Lu PhD‡; Wang, Ning PhD‡; Hsu, Ann BA§; Khoshnood, Kaveh PhD§
From the *Department of AIDS/STD Control and Prevention, Hunan Provincial Center for Disease Prevention and Control, Changsha, People's Republic of China; †School of Public Health, Central South University, Changsha, People's Republic of China; ‡National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China; and §School of Public Health, Yale University, New Haven, CT
X.C. and X.L. contributed equally to this work.
Supported by the China National Mega-project of science Research No. 2008ZX10001–003 and the Fundamental Research Funds for the Central Universities No.2012QNZT203. No conflict of interests exists.
Correspondence: Xingli Li, School of Public Health, Central South University, No. 110 Xiangya Rd, Changsha, Hunan 410078, People's Republic of China. E-mail: [email protected].
Received for publication January 4, 2012, and accepted April 17, 2012.