State Key Laboratory for Infectious Diseases Control and Prevention;
National Institute for Communicable Disease Control and Prevention;
Chinese Center for Disease Control and Prevention;
Beijing 102206;
China;
Department of Physiology and Pathophysiology;
Basic Medical Sciences School of Capital Medical University;
Beo'ing 100069;
China;
The Third People's Hospital of Chengdu City;
Chengdu 610031;
Sichuan;
China;
Chengdu Children Hospital;
Chengdu 610017;
Sichuan;
China;
Feicheng Mining Group Company Health and Epidemic Prevention Station;
Feicheng 2 71608;
Shangdong;
China;