Assertion: second trimester amniocentesis | /r/HasProperty | studied
Facets:
value: fairly extensively
type: DEGREE
Source sentences:
text: Second trimester amniocentesis has been studied fairly extensively, and long-term follow-up studies have shown that, as a group, children exposed to second-trimester amniocentesis are not substantially more at risk for more long-term complications than children not exposed to amniocentesis.