Affiliation: | 1.Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110801, China;2.Department of Blood Transfusion, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110801, China;3.School of Medicine, Shanghai Jiaotong University, Shanghai 200240, China;4.Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110801, China. |