1. Department of Gastroenterology, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
2. Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
3. Department of Ultrasound, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
4. Department of Cardiology, School of Medicine, the Johns Hopkins Hospital, Baltimore, Maryland
5. Department of Gastroenterology, Sir Runrun Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China