Harahap RRD, Sabri R, Mahathir M. The Relationship between Smoking and Physical Activity with Cognitive Impairment among the Elderly. IJGHR [Internet]. 1Oct.2025 [cited 18Apr.2026];7(5):485-92. Available from: https://jurnal.globalhealthsciencegroup.com/index.php/IJGHR/article/view/6849