1. Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
2. Department of Cardiac Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
3. Department of Cardiothoracic Surgery, Hammersmith Hospital, London, UK
4. Department of Cardiac Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, China