1. Department of Surgery, Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
2. Research Center for Cardiac Regenerative Medicine, Ministry of Health, Beijing, China.
3. Department of Thoracic and Cardiovascular Surgery, Shijinshang Hospital, Beijing, China.
4. Department of Thoracic and Cardiovascular Surgery, First Hospital, Wenzhou Medical College, Wenzhou, China.
5. Department of Thoracic and Cardiovascular Surgery, Second Hospital of Lanzhou University, Lanzhou, China.