The Efficacy of Coronary Sinus Reducer in Patients with Refractory Angina: A Systematic Review and Meta-Analysis. - Theofilis, Panagiotis; Vlachakis, Panayotis K.; Sagris, Marios; Mantzouranis, Emmanouil; Sakalidis, Athanasios; Soulaidopoulos, Stergios; Chasikidis, Christos; Oikonomou, Evangelos; Tsioufis, Konstantinos; Tousoulis, Dimitris (Reviews in Cardiovascular Medicine, 2024)