Cardiac involvement in carriers of Duchenne and Becker muscular dystrophy - Hoogerwaard, EM; van der Wouw, PA; Wilde, AA; Bakker, E; Ippel, PF; Oosterwijk, JC; Majoor-Krakauer, DF; van Essen, AJ; Leschot, NJ; de Visser, M (Neuromuscul Disord, 1999)