title: On chaos in classification of childhood spinal muscular atrophy.
authors.forename: I
authors.initials: I
authors.lastname: Hausmanowa-Petrusewicz
authors.forename: B
authors.initials: B
authors.lastname: Badurska-Modrzycka
authors.forename: B
authors.initials: B
authors.lastname: Ryniewicz
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009134:Muscular Atrophy, Spinal / Q000145:classification*