Abdalqader MA, Ariffin IA, Ghazi HF, AboBakr MF, Fadzil MA. Prevalence of Insomnia and Its Association with Social Media Usage among University Students in Selangor, Malaysia, 2018. FMI [Internet]. 2018 Dec. 11 [cited 2024 Aug. 3];54(4):289-93. Available from: https://e-journal.unair.ac.id/FMI/article/view/10715