_:vb50942447 . _:vb50942447 "url:https://www.ncbi.nlm.nih.gov/pubmed/5692341"^^ . _:vb50942447 . _:vb50942447 . _:vb50942447 . _:vb50942447 "A juvenile amyotrophic lateral sclerosis that is slowly progressive with concomitantly progressive dementia."^^ . _:vb50942447 .