Assertion: bioidentical hormone | /r/ObjectUse | used for menopausal symptom relief
Facets:
value: in the 1930s
type: TEMPORAL
Source sentences:
text: Bioidentical hormones were first used for menopausal symptom relief in the 1930s, after Canadian researcher James Collip developed a method to extract an orally active estrogen from the urine of pregnant women and marketed it as the active agent in a product called Emmenin.