El-Gilany, Abdel-Hady, Nadia Saleh, Heba Mohamed, and Eman Elsayed. “Prevalence of Insomnia and Its Associated Factors Among Rural Elderly: A Community Based Study”. International Journal of Advanced Nursing Studies 6, no. 1 (April 15, 2017): 56–62. Accessed April 12, 2025. https://sciencepubco.com/index.php/IJANS/article/view/7415.