1. The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
2. Department of Radiology, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
3. The Medical Imaging Laboratory, School of Medical Information Engineering, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
4. Department of Statistics and Epidemiology, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China