[1] Cent South Univ, Xiangya Sch Publ Hlth, Hunan Prov Key Lab Clin Epidemiol, Changsha, Peoples R China
[2] Hunan Univ, Inst Pathogen Biol & Immunol, Coll Biol, Hunan Prov Key Lab Med Virol,State Key Lab Chemo B, Changsha, Peoples R China
[3] Katholieke Univ Leuven, Rega Inst Med Res, Dept Microbiol Immunol & Transplantat, Leuven, Belgium
[4] Shiraz Univ Med Sci, Inst Hlth, Hlth Policy Res Ctr, Shiraz, Iran
[5] High Inst Res & Educ Transfus Med, Blood Transfus Res Ctr, Tehran, Iran
[6] Hunan Childrens Hosp, Changsha, Peoples R China