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Article:Effect of Estrogen plus Progestin on Risk for Biliary Tract Surgery in Postmenopausal Women with Coronary Artery Disease:
The Heart and Estrogen/progestin Replacement Study
Joel A. Simon,
Donald B. Hunninghake,
Sanjay K. Agarwal,
Feng Lin,
Jane A. Cauley,
Christine C. Ireland,
James H. Pickar,
and for the Heart and Estrogen/progestin Replacement Study (HERS) Research Group