S. Saher, F. Ahmed, F. Sikandar, S. Abubakar, and S. Maream, “Frequency of Persistent Smoking Among Patient Undergone Percutaneous Coronary Intervention (PCI) at Tertiary Care Hospital”, IJBR, vol. 3, no. 7, pp. 1516–1520, Jul. 2025, doi: 10.70749/ijbr.v3i7.2816.