title: Heterogeneity in proximal spinal muscular atrophy.
authors.forename: K
authors.initials: K
authors.lastname: Zerres
authors.forename: S
authors.initials: S
authors.lastname: Rudnik-Schöneborn
authors.forename: M
authors.initials: M
authors.lastname: Rietschel
mesh_terms: D000367:Age Factors; D005192:Family Health; D005260:Female; D008040:Genetic Linkage; D006579:Heterozygote; D006801:Humans; D008297:Male; D009134:Muscular Atrophy, Spinal / Q000235:genetics*; D009154:Mutation; D012737:Sex Factors