1. Guangxing Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310007, P.R. China
2. School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang 310018, P.R. China
3. The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China
4. The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
5. Peking University People's Hospital, Beijing 100044, P.R. China