117th ENMC workshop: ventilatory support in congenital neuromuscular disorders – congenital myopathies, congenital muscular dystrophies, congenital myotonic dystrophy and SMA (II) 4 – 6 April 2003, Naarden, The Netherlands. - Wallgren-Pettersson,C.; Bushby,K.; Mellies,U.; Simonds,A. (Neuromuscul Disord, 2004)