Fang, Qian, Rong Li, Jinyan Xiao, and Chenyu Liu. 2026. “Risk Factors for Postoperative Sleep Disturbance in Elderly Patients Undergoing Hip Arthroplasty Surgery: The Role of Preoperative Depression and Anxiety”. Actas Españolas De Psiquiatría 54 (4):1120-31. https://doi.org/10.62641/aep.v54i4.2244.