Gurkan Gurok, M., A. Kazgan, M. Onur Kaya, and M. Atmaca. “The Correlation Between Delirium Subtypes and Treatment Efficacy and Biochemical Parameters: A Preliminary Study”. Annals of Medical Research, vol. 26, no. 7, May 2021, pp. 1283-8, http://www.annalsmedres.org/index.php/aomr/article/view/1280.