1. WHO WPRO Regional Polio Reference Laboratory and National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and Prevention Beijing People’s Republic of China
2. Xinjiang Uygur Autonomous Region Center for Disease Control and Prevention, Urumqi CityXinjiang Uygur Autonomous Region Beijing People’s Republic of China
3. Tibet Center for Disease Control and Prevention, Lhasa CityTibet Autonomous Region Beijing People’s Republic of China
4. Anhui University of Science and Technology Anhui Province People’s Republic of China