Jańczyk, M., I. Samek, and M. Pachowicz. “Myocardial Blood Flow Assessment With Myocardial Perfusion Scan in Patients With Coronary Artery Chronic Total Occlusion”. Journal of Education, Health and Sport, vol. 10, no. 6, June 2020, pp. 275-8, doi:10.12775/JEHS.2020.10.06.030.