1. Department of Cardiovascular Surgery; General Hospital of Shenyang Military Area Command; Shenyang Liaoning China
2. Department of Thoracic Surgery; Tangdu Hospital; The Fourth Military Medical University; Xi'an Shaanxi China
3. Department of Cardiovascular Surgery; Northwest Women's and Children's Hospital; Xi'an Shaanxi China
4. Department of Biomedical Engineering; The Fourth Military Medical University; Xi'an China
5. Department of Thoracic and Cardiovascular Surgery; Affiliated Drum Tower Hospital of Nanjing University Medical School; Nanjing Jiangsu China