1. Department of Thoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
2. Department of Cardiothoracic Surgery, People’s Hospital of Chizhou, Chizhou, China
3. Department of Operation, The Second Affiliated Hospital of Soochow University, Suzhou, China
4. Department of Obstetrics, People’s Hospital of Chizhou, Chizhou, China
5. Department of Pathology, The Second Affiliated Hospital of Soochow University, Suzhou, China