1. Department of Respiratory Medicine , Zhejiang Chinese and Western Medicine Integrated Hospital , Hangzhou 310003 , China
2. Laboratory Department , Zhejiang Chinese and Western Medicine Integrated Hospital , Hangzhou 310003 , China
3. Department of Medical Microbiology and Parasitology, and Department of infectious diseases , affiliated children's hospital, Zhejiang University School of Medicine , 866 Yuhangtang Road , Hangzhou 310058 , China
4. Department of Infectious Diseases , Affiliated Children’s Hospital, School of Medicine, Zhejiang University , Hangzhou 310058 , China