sincihu, yudhiakuari, and Nita Kurniawati. “Insomnia Is Not a Risk Factor for Impaired Cognitive Function in Elderly”. Qanun Medika - Medical Journal Faculty of Medicine Muhammadiyah Surabaya 2, no. 2 (July 27, 2018). Accessed May 4, 2024. https://journal.um-surabaya.ac.id/qanunmedika/article/view/1446.