Term Name:	spinal muscular atrophy type 0
Synonyms:	very severe spinal muscular atrophy
Definition:	A childhood spinal muscular atrophy that is evident before birth and characterized by diminished movement in the womb, joint deformities, extremely weak muscle tone and very weak respiratory muscles.
Ontology:	Human Disease [DOID:0080667]   ( DOID:0080667 )