Assertion: muscular dystrophy's onset | /r/HasProperty | around age
Facets:
value: usually
type: DEGREE
Source sentences:
text: Onset at around age 7 to 8 years of age shows more cardiac involvement and trouble climbing stairs by age 20, if onset is around age 12, there is less cardiac involvement.
text: The onset of symptoms is usually around age 35, and the condition progresses very slowly.