Open Heart, 9(1):001984. BMJ Publishing Group Open Heart, 9(1):e001984. BMJ Publishing Group van der Sangen, N M R, Azzahhafi, J, Chan Pin Yin, D R P P, Peper, J, Rayhi, S, Walhout, R J, Tjon Joe Gin, M, Nicastia, D M, Langerveld, J, Vlachojannis, G J, van Bommel, R J, Appelman, Y, Henriques, J P S, ten Berg, J M & Kikkert, W J 2022, ' External validation of the GRACE risk score and the risk-treatment paradox in patients with acute coronary syndrome ', Open Heart, vol. 9, no. 1, e001984 . https://doi.org/10.1136/openhrt-2022-001984 Open heart, 9(1):e001984. BMJ Publishing Group