Early-onset dystrophia myotonica. Evidence supporting a maternal environmental factor.
D000328:Adult; D000483:Alleles; D002675:Child, Preschool; D005260:Female; D005298:Fertility; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000235:genetics*; D008297:Male; D008431:Maternal-Fetal Exchange; D009223:Myotonic Dystrophy / Q000209:etiology / Q000235:genetics*; D011247:Pregnancy; D012744:Sex Ratio