title: Progressive spinal muscular atrophy in infancy and childhood.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000690:Amyotrophic Lateral Sclerosis / Q000175:diagnosis; D002648:Child; D002675:Child, Preschool; D006233:Persons with Disabilities; D006801:Humans; D007223:Infant; D008124:Locomotion; D009133:Muscular Atrophy / Q000175:diagnosis*; D011379:Prognosis; D013118:Spinal Cord Diseases / Q000175:diagnosis*