{"groups":[{"description":"This is a prospective longitudinal pilot study, and the targeted patient population is postmenopausal women with breast cancer being treated with adjuvant aromatase inhibitors who are initiated on vaginal 17β-estradiol to relieve symptoms of atrophic vaginitis.","id":"FG000","title":"Letrozole"},{"description":"This is a prospective longitudinal pilot study, and the targeted patient population is postmenopausal women with breast cancer being treated with adjuvant aromatase inhibitors who are initiated on vaginal 17β-estradiol to relieve symptoms of atrophic vaginitis.","id":"FG001","title":"Anastrozole"}],"periods":[{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"1"}],"type":"Adverse Event"},{"reasons":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"0"}],"type":"Physician Decision"},{"reasons":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"1"}],"type":"Withdrawal by Subject"},{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"1"}],"type":"Protocol Violation"},{"reasons":[{"groupId":"FG000","numSubjects":"2"},{"groupId":"FG001","numSubjects":"2"}],"type":"Pts did not start treatment"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"12"},{"groupId":"FG001","numSubjects":"19"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"8"},{"groupId":"FG001","numSubjects":"14"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"4"},{"groupId":"FG001","numSubjects":"5"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}]}