{"groups":[{"description":"ESTRING® (estradiol vaginal ring) is a slightly opaque ring with a whitish core containing a drug reservoir of 2 mg estradiol. Estradiol, silicone polymers and barium sulfate are combined to form the ring. When placed in the vagina, ESTRING releases estradiol, approximately 7.5 mcg per 24 hours, in a consistent stable manner over 90 days.","id":"FG000","title":"Estradiol"}],"periods":[{"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"14"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"14"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}]}