1. Department of Gastroenterology; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou
2. Department of Hematology; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou
3. State Key Laboratory of Oncology in South China; Cancer Center; Sun Yat-sen University; Guangzhou
4. Department of Pathology; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou
5. State Key Laboratory of Oncology in South China; the Chinese University of Hong Kong; Hong Kong China