1. Department of Gastroenterology & Hepatology, Chinese PLA General Hospital, Beijing, China
2. School of Medicine, Nankai University, Tianjin, China
3. MOE Key Laboratory of Bioinformatics, Center for Synthetic and Systems Biology, School of Life Sciences, Tsinghua University, Beijing, China
4. The Hillman Cancer Center, University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA
5. Laboratory of Molecular Oncology, Peking University Cancer Hospital & Institute, Beijing, China
6. Laboratory of Cancer Epigenetics, Free University of Brussels (U.L.B.), Brussels, Belgium