1. Shanghai Key Laboratory of Gastric Neoplasms Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China
2. Hormel Institute University of Minnesota Austin Minnesota 55912
3. Beijing Baofa Cancer Hospital Shahe Wangzhuang Gong Ye Yuan Chang Pin Qu Beijing 102206 China
4. Laboratory of Cell and Molecular Biology Cancer Institute Chinese Academy of Medical Science Beijing 100021 China