1 Hangzhou Center for Disease Control and Prevention, Hangzhou 310021, Zhejiang, China;School of Medicine, Hangzhou Normal University, Hangzhou 310021, Zhejiang, China.
2 School of Medicine, Hangzhou Normal University, Hangzhou 310021, Zhejiang, China.
3 Hangzhou Center for Disease Control and Prevention, Hangzhou 310021, Zhejiang, China.