1. Department of Cardiovascular Surgery, Northern Jiangsu People's Hospital, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
2. Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
3. Department of Thoracic and Cardiovascular Surgery, Jiangsu Province Hospital of Traditional Chinese Medicine (TCM), Nanjing, Jiangsu 210029, P.R. China