1. Department of Thoracic Surgery and Oncology; The First Affiliated Hospital of Xi'an Jiaotong University; Xi'an Shaanxi Province China
2. Department of Otorhinolaryngology; The First Affiliated Hospital of Xi'an Jiaotong University; Xi'an Shaanxi Province China
3. Georgia Regents University Cancer Center; Augusta GA USA
4. Tianjin Medical University Cancer Institute and Hospital; Tianjin China