[1]Yunnan Inst Endem Dis Control & Prevent, Kunming, Yunnan, Peoples R China.
[2]Fuwai Hosp, Beijing, Peoples R China.
[3]Chinese Acad Med Sci, Cardiovasc Inst, Beijing, Peoples R China.
[4]Peking Union Med Coll, Beijing, Peoples R China.
[5]Chinese Ctr Dis Control & Prevent, Chinese Field Epidemiol Training Program, Nanning, Peoples R China.
[6]Kunming Med Univ, Forens Med Coll, Kunming, Yunnan, Peoples R China.
[7]Ctr Dis Control & Prevent Chuxiong Prefecture, Kunming, Yunnan, Peoples R China.
[8]Ctr Dis Control & Prevent Linchang City, Linchang, Peoples R China.
[9]Ctr Dis Control & Prevent Dali Prefecture, Dalian, Peoples R China.
[10]US Ctr Dis Control & Prevent, Atlanta, GA USA.