1. The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
2. Department of Gastroenterology, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
3. Department of Allergy, Immunology and Rheumatology, Guangzhou Women and Children’s Medical Center, Guangzhou 510623, China
4. Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, China