“Warm-Up”-Like Phenomen in Andersen–Tawil-Syndrome: A Case Report and Comparative Analysis to Myotonica Congenita - Küpper, H.; Roland-Schäfer, D.; Scheckenbach, C.; Kehrer, M.; Tizia, M.; Horber, V.; Rosewich, H. (Neuropediatrics, 2025)