1. Department of Radiology, Thomas Jefferson University, Philadelphia, PA, USA
2. Department of Clinical Medicine, University of Bergen, Bergen, Norway
3. Department of Ultrasound, Xiangya Hospital, Central South University, Changsha, Hunan, China
4. Department of Echocardiography, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
5. Department of Ultrasound, National Center for Ultrasound in Gastroenterology, Haukeland University Hospital, Bergen, Norway
6. Shanghai General Hospital, Shanghai, China
7. Department of Ultrasound, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
8. Department of Ultrasound, Peking University People’s Hospital, Beijing, China
9. GE Global Research, Niskayuna, NY, USA