1. Department of Cardio-Thoracic Surgery, Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, Zhejiang, China
2. College of Physical Education, Yangzhou University, Yangzhou, Jiangsu, China
3. Jiangdong Middle School, Yiwu, Zhejiang, China
4. College of Physical Education and Health Sciences, Zhejiang Normal University, Jinhua, Zhejiang, China