Institution: | 1. Department of Pediatric Hematology/Oncology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China;2. Department of Pathology, The Second People''s Hospital of Baoshan, Baoshan, Yunnan, China;3. Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China;4. Department of Pathology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Kongjiang Road 1665, Shanghai, China |