1. Department of Cardiothoracic Surgery, First Affiliated Hospital of Xinxiang Medical University, Weihui, People's Republic of China.
2. Department of General Surgery, First Affiliated Hospital of Xinxiang Medical University, Weihui, People's Republic of China.
3. Department of Outpatient, First Affiliated Hospital of Xinxiang Medical University, Weihui, People's Republic of China.