Zhu , Si-Hai, Mu-Huo Ji, Da-Peng Gao, Wei-Yan Li, and Jian-Jun Yang. 2013. “Association Between Perioperative Blood Transfusion and Early Postoperative Cognitive Dysfunction in Aged Patients Following Total Hip Replacement Surgery”. Upsala Journal of Medical Sciences 119 (3):262–267. https://doi.org/10.3109/03009734.2013.873502.