1. Department of Cardiopulmonary Bypass; Chinese Academy of Medical Science and Peking Union Medical College; Fuwai Hospital and National Center for Cardiovascular Diseases; Beijing China
2. Anesthesia and Operation Center; Chinese PLA General Hospital; Beijing China
3. Department of Cardiac Surgery; Chinese Academy of Medical Science and Peking Union Medical College; Fuwai Hospital and National Center for Cardiovascular Diseases; Beijing China
4. Department of Anesthesiology; Chinese Academy of Medical Science and Peking Union Medical College; Fuwai Hospital and National Center for Cardiovascular Diseases; Beijing China