Infantile spinal muscular atrophy, type I [Werdnig-Hoffman]
Other inherited spinal muscular atrophy
Motor neuron disease
Motor neuron disease unspecified
Amyotrophic lateral sclerosis
Progressive bulbar palsy
Primary lateral sclerosis
Familial motor neuron disease
Progressive spinal muscle atrophy
Other motor neuron disease
Other spinal muscular atrophies and related syndromes
Spinal muscular atrophy, unspecified