
Keywords: تظاهرات بالینی; Childhood myotonic dystrophy; Clinical evolution; Clinical manifestations; Excessive daytime sleepiness; Quality of life; CDM1; Congenital Myotonic Dystrophy; DM1; Myotonic Dystrophy Type 1; DMPK; Dystrophia Myotonica protein kinase; ESS; Epworth Sleepine