title: Clinical and genetic heterogeneity in spinal muscular atrophy--the multiple allele model.
authors.forename: A E
authors.initials: AE
authors.lastname: Emery
mesh_terms: D000483:Alleles; D014644:Genetic Variation / Q000235:genetics*; D006801:Humans; D008957:Models, Genetic; D009134:Muscular Atrophy, Spinal / Q000235:genetics*; D010641:Phenotype