Irfan Sazali Nasution, et al. “Overview of the Level of Knowledge About Risk Factors for Coronary Heart Disease in Students in Grades VIII-2 SMP Negeri 1 Pancur Batu ”. International Journal of Health, Economics, and Social Sciences (IJHESS), vol. 8, no. 3, July 2026, p. 968~972, doi:10.56338/ijhess.v8i3.11515.