Europace, 23(6):euab012, 887-897. Oxford University Press Europace, 23, 887-897 Europace, 23, 6, pp. 887-897 Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology, 23(6), 887-897. Oxford University Press EP Europace, 23(6), 887-897. OXFORD UNIV PRESS Europace, 23(6), 887-897. OXFORD UNIV PRESS Europace Europace, 23(6), 887-897. Oxford University Press Verstraelen, T E, van Barreveld, M, van Dessel, P H F M, Boersma, L V A, Delnoy, P-P P H M, Tuinenburg, A E, Theuns, D A M J, van der Voort, P H, Kimman, G P, Buskens, E, Hulleman, M, Allaart, C P, Strikwerda, S, Scholten, M F, Meine, M, Abels, R, Maass, A H, Firouzi, M, Widdershoven, J W M G, Elders, J, van Gent, M W F, Khan, M, Vernooy, K, Grauss, R W, Tukkie, R, van Erven, L, Spierenburg, H A M, Brouwer, M A, Bartels, G L, Bijsterveld, N R, Borger van der Burg, A E, Vet, M W, Derksen, R, Knops, R E, Bracke, F A L E, Harden, M, Sticherling, C, Willems, R, Friede, T, Zabel, M, Dijkgraaf, M G W, Zwinderman, A H & Wilde, A A M 2021, ' Development and external validation of prediction models to predict implantable cardioverter-defibrillator efficacy in primary prevention of sudden cardiac death ', Europace, vol. 23, no. 6, pp. 887-897 . https://doi.org/10.1093/europace/euab012 Europace : European pacing, arrhythmias, and cardiac electrophysiology, 23(6), 887-897. Oxford University Press EP Europace, 23(6), 887-897. Oxford University Press