Jadczyk T, Ciosek J, Michalewska-Wludarczyk A, Szot W, Parma Z, Ochala B, Markiewicz M, Rychlik W, Kostkiewicz M, Gruszczynska K, et al. Effects of trans-endocardial delivery of bone marrow-derived CD133+ cells on angina and quality of life in patients with refractory angina: A sub-analysis of the REGENT-VSEL trial. Cardiol J. 2018;25(4):521-529.