William, Jennifer, Nisha Sarwar, Humaira Saddique, Syeda Tasneem Kauser, and Kalim Ullah. “Factors Affecting on Sleeplessness of Patients in Intensive Care Unit (ICU): Sleeplessness of Patients in ICU”. Pakistan Journal of Health Sciences 4, no. 06 (June 30, 2023): 114–118. Accessed May 14, 2024. https://thejas.com.pk/index.php/pjhs/article/view/520.