Ahmad, Ibtasam, et al. “Assessment of Risk Factors and MACE Rate Among Occluded and Non-Occluded NSTEMI Patients Undergoing Coronary Artery Angiography: A Retrospective Cross-Sectional Study in Multan, Pakistan”. Journal of Cardiology and Cardiovascular Medicine, vol. 3, no. 2, May 2018, pp. 023-30, doi:10.29328/journal.jccm.1001023.