Frequency and Genotype‐Dependence of intrinsic chronotropic insufficiency among patients with congenital long QT syndrome. - Kulkarni, Veda K.; Pinsky, Alexa M.; Bos, J. Martijn; Neves, Raquel; Bains, Sahej; Giudicessi, John R.; Allison, Thomas G.; Ackerman, Michael J. (Journal of Cardiovascular Electrophysiology, 2025)