1. The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, P.R. China
2. Department of Pathology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, P.R. China
3. Department of Radiology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, P.R. China