title: Observational studies and clinical trials of menopausal hormone therapy: can they both be right?
authors.forename: Matthew A
authors.initials: MA
authors.lastname: Allison
authors.forename: Joann E
authors.initials: JE
authors.lastname: Manson
mesh_terms: D000328:Adult; D002318:Cardiovascular Diseases; D002986:Clinical Trials as Topic; D015914:Estrogen Replacement Therapy / Q000009:adverse effects; D005260:Female; D006801:Humans; D008593:Menopause; D008875:Middle Aged; D019370:Observation; D011372:Progestins / Q000008:administration & dosage; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D016387:Women's Health
chemical_list: D011372:Progestins