Assertion: becker muscular dystrophy | /r/CapableOf | affect boy
Facets:
value: mainly
type: DEGREE
value: generally
type: DEGREE
Source sentences:
text: It also affects boys but the symptoms start later -- between ages 11 and 25.
text: It generally affects boys and young men and the progression of the disease is not so rapid.
text: It primarily affects boys and shares many of the same symptoms as Duchenne muscular dystrophy.
text: Becker muscular dystrophy starts in teenage or early adult years, affecting mainly boys and young men.