1. Department of Cardiopulmonary Bypass, Cardiovascular Institute and FuWai Hospital, Beijing, China
2. Department of Cardiopulmonary Bypass, Cardiovascular Institute and FuWai Hospital, Beijing, China,
3. Department of Cardiac Surgery, Cardiovascular Institute and FuWai Hospital, Beijing, China
4. Intensive Care Unit, Cardiovascular Institute and FuWai Hospital, Beijing, China