1 Department of Thoracic Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China.
2 Department of Orthopaedics and Department of Plastic Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233004, China.
3 Department of Thoracic Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China. Electronic address: daitianyang0520@sina.com.