1. The Department of Thoracic Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
2. Clinical Medical College, Yangzhou University, No. 98 Nantong West Road, Yangzhou, Jiangsu 225009, P. R. China
3. Northern Jiangsu People's Hospital Affiliated Hospital to Yangzhou University, Yangzhou, China
4. Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, China