Werner, G S, Avran, A, Mashayekhi, K, Reifart, J, Galassi, A R, Boudou, N, Meyer-Gessner, M, Garbo, R, Buettner, J H, Bufe, A, Spratt, J C, Bryniarski, L, Kalnins, A, Lismanis, A, Christiansen, E H, Martin-Yuste, V, Isaaz, K, Sianos, G, Gagnor, A, di Mario, C, Hildick-Smith, D, Serra, A, Grancini, L & Reifart, N 2021, ' Radiation Exposure for Percutaneous Interventions of Chronic Total Coronary Occlusions in a Multicenter Registry : The Influence of Operator Variability and Technical Set-up ', The Journal of invasive cardiology, vol. 33, no. 3, pp. E146-E154 .