title: Should observational studies be a thing of the past?
authors: Kathleen I
authors: KI
authors: Pritchard
mesh_terms: D001943:Breast Neoplasms / Q000139:chemically induced* / Q000453:epidemiology*; D003071:Cognition / Q000187:drug effects; D003324:Coronary Artery Disease / Q000139:chemically induced / Q000453:epidemiology; D003704:Dementia / Q000139:chemically induced / Q000453:epidemiology; D015914:Estrogen Replacement Therapy / Q000009:adverse effects* / Q000379:methods*; D005260:Female; D006801:Humans; D015588:Observer Variation; D016017:Odds Ratio; D011247:Pregnancy; D011252:Pregnancy Complications, Neoplastic / Q000453:epidemiology; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D018570:Risk Assessment; D012537:Scandinavian and Nordic Countries / Q000453:epidemiology; D015983:Selection Bias; D020521:Stroke / Q000139:chemically induced / Q000453:epidemiology