1. Department of Burn Surgery, First Hospital, Jilin University, Changchun, Jilin, P. R. China
2. Division of Life Sciences and Medicine, Department of Anesthesiology, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, Anhui, P. R. China
3. Department of Anesthesiology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, P. R. China
4. Department of Anesthesiology, Shanghai Gongli Hospital, the Second Military Medical University, Shanghai, P. R. China
5. Ningxia Medical University, Gongli Hospital of Shanghai Pudong New Area Training Base, Shanghai, P. R. China