J. . William, N. . Sarwar, H. . Saddique, S. T. . Kauser, and K. . Ullah, “Factors Affecting on Sleeplessness of Patients in Intensive Care Unit (ICU): Sleeplessness of Patients in ICU”, PJHS, vol. 4, no. 06, pp. 114–118, Jun. 2023.