Myopathy as the first symptom of hypokalemic periodic paralysis -- case report of a girl from a Polish family with CACNA1S (R1239G) mutation. - Winczewska-Wiktor, A.; Steinborn, B.; Lehman-Horn, F.; Biczysko, W.; Wiktor, M.; Gurda, B.; Jurkat-Rott, K. (Advances in Medical Sciences (De Gruyter Open), 2007)