Muscle disorders in childhood.
D002648:Child; D006801:Humans; D009133:Muscular Atrophy / Q000175:diagnosis; D009136:Muscular Dystrophies / Q000175:diagnosis; D009223:Myotonic Dystrophy / Q000175:diagnosis; D009468:Neuromuscular Diseases / Q000151:congenital / Q000175:diagnosis; D013122:Spinal Diseases / Q000175:diagnosis