1. Public Health School of Xinjiang Medical University, Ürümqi 830011, Xinjiang Uygur Autonomous Region, China;
2. Shihezi University, Shihezi 832003, Xinjiang Uygur Autonomous Region, China;
3. Alashankou Entry-Exit Inspection and Quarantine Bureau, Alashankou 833418, Xinjiang Uygur Autonomous Region, China;