title: Chaos in the classification of SMA: a possible resolution.
authors.affiliation: Department of Paediatrics and Neonatal Medicine, Royal Postgraduate Medical School, Hammersmith Hospital, London.
authors.forename: V
authors.initials: V
authors.lastname: Dubowitz
mesh_terms: D017668:Age of Onset; D002648:Child; D005260:Female; D006801:Humans; D008433:Mathematics; D009068:Movement; D012720:Severity of Illness Index; D014897:Spinal Muscular Atrophies of Childhood / Q000145:classification* / Q000175:diagnosis