1 Department of Ultrasound, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China (Y-X.L., J-Y.S., G-L.L., H.L., S-C.S.).
2 Department of Health Management, Zhujiang Hospital, Southern Medical University, Guangzhou, China (Q-H.L.).
3 Department of Health Management, Nanfang Hospital, Southern Medical University, Guangzhou, China (Q-H.H.).
4 Department of Ultrasound, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China (Y-X.L., J-Y.S., G-L.L., H.L., S-C.S.). Electronic address: shengchunshu@163.com.