The discrepancy between observational studies and randomized trials of menopausal hormone therapy.
Grodstein
Francine
F
Manson
JoAnn E
JE
Stampfer
Meir J
MJ
Willett
Walter C
WC
D000367:Age Factors; D000368:Aged; D003327:Coronary Disease / Q000517:prevention & control*; D005260:Female; D020249:Hormone Replacement Therapy; D006801:Humans; D008875:Middle Aged; D019370:Observation; D017698:Postmenopause; D016032:Randomized Controlled Trials as Topic / Q000592:standards*; D012107:Research Design / Q000592:standards*; D013997:Time Factors