Fahrozi, F., Nuraini, N., Darwin, P., Leli H. Indriyati and Pudyastuti , E. 2023. The Effect of Gadget Usage Duration on Cognitive Function with MMSE in SMPN 2 Students in Koba District, Bangka Belitung Islands. Jurnal EduHealth. 14, 04 (Dec. 2023), 458–463.