{"groups":[{"description":"Patients receive zoledronic acid IV over at least 15 minutes every 4 weeks for up to 2 years in the absence of disease progression or unacceptable toxicity.","id":"FG000","title":"Arm I (Zoledronic Acid Every 4 Weeks)"},{"description":"Patients receive zoledronic acid IV over at least 15 minutes every 12 weeks for up to 2 years in the absence of disease progression or unacceptable toxicity.","id":"FG001","title":"Arm II (Zoledronic Acid Every 12 Weeks)"}],"periods":[{"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"911"},{"groupId":"FG001","numSubjects":"911"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"882"},{"groupId":"FG001","numSubjects":"884"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"29"},{"groupId":"FG001","numSubjects":"27"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}]}