Djalilah GN, Oktaviyanti LD, Prasetya EC, Indrawati ND, Nugraha AS. The relationship between smartphone addiction and insomnia among medical students at Muhammadiyah University of Surabaya. Qanun Medika [Internet]. 2024 Jul. 15 [cited 2025 Jan. 6];8(02). Available from: https://journal.um-surabaya.ac.id/qanunmedika/article/view/22069