1. School of Computer Science and Engineering, Sun Yat-sen University, Guangzhou, China
2. Department of Rheumatology, Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
3. Department of Medical Ultrasonics, Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
4. Department of Gastrointestinal Endoscopy, Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
5. School of Artificial Intelligence, Xidian University, Xi'an, Shaanxi, China
6. Shenzhen Research Institute of Big Data, Shenzhen, China