1. Department of Gastrointestinal Surgical Oncology, Fujian Medical University Cancer Hospital, Fujian Cancer Hospital, Fuzhou, China.
2. School of Medicine, Xiamen University, Xiamen, China.
3. Department of Head and Neck Surgical Oncology, Fujian Medical University Cancer Hospital, Fujian Cancer Hospital, Fuzhou, China.
4. Department of Oncology, Clinical medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, China.