1. School of Public Health, Xinjiang Medical University, Urumqi, Xinjiang Uyghur Autonomous Region 830011, P.R. China
2. State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Department of Respiratory Medicine, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uyghur Autonomous Region 830054, P.R. China
3. Department of Immunology, College of Basic Medicine, Xinjiang Medical University, Urumqi, Xinjiang Uyghur Autonomous Region 830011, P.R. China