title: Genetic heterogeneity for dystrophia myotonica.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005796:Genes; D005817:Genetic Counseling; D006579:Heterozygote; D006801:Humans; D007223:Infant; D008875:Middle Aged; D009154:Mutation; D009223:Myotonic Dystrophy / Q000453:epidemiology / Q000235:genetics*