title: Foreword: hormone therapy arms.
authors.affiliation: Division of Reproductive Endocrinology, Department of Obstetrics and Gynecology, Columbia University Medical Center, 622 West 168th Street, New York, NY 10032, USA. Electronic address: ral35@columbia.edu.
authors.forename: Roger A
authors.initials: RA
authors.lastname: Lobo
mesh_terms: D015914:Estrogen Replacement Therapy / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008875:Middle Aged; D016032:Randomized Controlled Trials as Topic; D016387:Women's Health