Djalilah, G.N. et al. 2024. The relationship between smartphone addiction and insomnia among medical students at Muhammadiyah University of Surabaya. Qanun Medika - Medical Journal Faculty of Medicine Muhammadiyah Surabaya. 8, 02 (Jul. 2024). DOI:https://doi.org/10.30651/jqm.v8i02.22069.