| Institution: | 1. Department of Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P. R. China;2. Department of Respiration, Department of Respiratory Medicine, Xi'an Central Hospital, Xi'an, Shaanxi Province, P. R. China;3. Department of Respiration, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P. R. China;4. Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P. R. China;5. Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P. R. China |
