1. Beijing Stomatological Hospital Capital Medical University Beijing PR China
2. Cancer Research Program Julius L Chambers Biomedical Biotechnology Research Institute, North Carolina Central University Durham NC USA
3. Department of Thoracic Surgery Ningxia Medical University General Hospital Yinchuan PR China
4. Department of Thoracic Surgery National Cancer Center, Cancer Hospital of Chinese Academy of Medical Sciences Beijing PR China
5. Center for Gastrointestinal Biology and Disease, Division of Gastroenterology and Hepatology, Department of Medicine University of North Carolina at Chapel Hill Chapel Hill NC USA