作者机构:[1]Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China, [2]Department of Biomedical Engineering, Fourth Military Medical University, Xi'an 710032, China
相关基金:Supported by the National Natural Science Fundation of China (No. 30471675) and the Topic of Tackle Key Problems in Science and Technology of Shaanxi Province (No. 2004K17G15).