{"groups":[{"description":"Continuous letrozole: 5 years continuously (2.5 mg Letrozole daily)\n\nLetrozole: Film-coated tablet, oral use, 2.5 mg Letrozole daily for 5 years continuously","id":"FG000","title":"Arm A: Continuous Letrozole"},{"description":"Intermittent letrozole: 48 months over 5 yrs: 4 x 9 months (9 mo followed by 3 mo treatment-free interval in yrs 1-4, -\\> 36 mo) plus 1 x 12 mo in yr 5 -\\> 48 months\n\nLetrozole: Film-coated tablet, oral use, 2.5 mg daily, 48 months over 5 yrs: 4 x 9 months (9 mo followed by 3 mo treatment-free interval in yrs 1-4, -\\> 36 mo) plus 1 x 12 mo in yr 5 -\\> 48 months","id":"FG001","title":"Arm B: Intermittent Letrozole"}],"periods":[{"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"2441"},{"groupId":"FG001","numSubjects":"2443"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"2426"},{"groupId":"FG001","numSubjects":"2425"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"15"},{"groupId":"FG001","numSubjects":"18"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}]}