{"groups":[{"description":"Vaccine + DLI","id":"FG000","title":"Recipient"},{"description":"Vaccine","id":"FG001","title":"Donor"}],"periods":[{"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"1"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"1"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}]}