Obstetrics and gynecology
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Obstetrics and gynecology · Aug 2006
Randomized Controlled TrialIncidence of cervical cytological abnormalities with aging in the women's health initiative: a randomized controlled trial.
To estimate the incidence of cytological abnormalities and cervical cancer and to determine the effect of oral estrogen and progestin on cervical cytology among postmenopausal women participating in a multi-institution clinical trial. ⋯ Clinicaltrials.gov, www.clinicaltrials.gov, NCT00000611.