Assertion: estrogen's replacement therapy | /r/CapableOf | start large study
Facets:
value: in 1991
type: TEMPORAL
Source sentences:
text: To learn more about women's health, and specifically hormone replacement therapy, the National Heart, Lung, and Blood Institute of the National Institutes of Health (NIH) started a large study in 1991 .It was called the Women's Health Initiative (WHI).