Peng, D., Q. Liu, X. Cao, and G. Deng. “Postoperative Delirium in Elderly Patients May Be Associated With Perioperative Blood Pressure Fluctuations”. Journal of Geriatric Medicine, vol. 3, no. 1, Apr. 2021, pp. 6-11, doi:10.30564/jgm.v3i1.2892.