1. 1Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, CHN
2. 2Department of Hematology, Nanfang Hospital, Southern Medical University, GUANGZHOU, CHN
3. 3Department of Gastroenterology, Nanfang Hospital,Southern Medical University, Guangzhou, China
4. 4Department of Hematology, Nanfang Hospital,Southern Medical University, Guangzhou, China
5. 5Nanfang Hospital, Southern Medical University, Guangzhou, China
6. 6Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
7. 7Nanfang hospital of southern medical university, London, United Kingdom
8. 8Department of Hematology,, Nanfang Hospital, Southern Medical University, Guangzhou, CHN
9. 9Nanfang Hospital, Southern Medical University, Guangzhou, CHN
10. 10Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, CHN
11. 11Department of Gastroenterology,, Nanfang Hospital, Southern Medical University, Guangzhou, China