1. Department of Emergency, Hangzhou Xixi Hospital, Hangzhou, Zhejiang Province, China
2. Department of Ultrasonography, Hangzhou Xixi Hospital, Hangzhou, Zhejiang Province, China
3. Department of Ultrasonography, Hangzhou Red Cross Hospital, Hangzhou, Zhejiang Province, China
4. Department of Hepatology, Hangzhou Xixi Hospital, Hangzhou, Zhejiang Province, China