Assertion: vaccine's risk | /r/HasProperty | 3 years
Facets:
Source sentences:
text: Authors calculated the relative risk (RR) of a child receiving an ASD diagnosis at ages 2 years, 3 years or 4 years based on whether the child had received 0 or 1 dose of MMR vaccine, AND whether the child had a sibling with ASD or a sibling without ASD.