{"groups":[{"description":"Benign head and neck tumors will be treated with stereotactic body radiation therapy\n\nstereotactic body radiotherapy: 14-16 Gray / 1 fraction OR 18-21 Gray / 3 fractions (6-7 Gray per fraction)OR 25-45 Gray / 5 fractions (5-9 Gray per fraction)","id":"FG000","title":"Benign Tumors"},{"description":"Malignant Head and Neck Tumors will be treated with stereotactic body radiation therapy.\n\nStereotactic body radiotherapy: 8-12 Gray / 1 fraction OR 12-18 Gray / 3 fractions (4-6 Gray per fraction) OR 35-45 Gray / 5 fractions (7-9 Gray per fraction)","id":"FG001","title":"Unrescectable Malignant Tumors"}],"periods":[{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"3"}],"type":"Physician Decision"},{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"6"}],"type":"Lost to Follow-up"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"18"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"9"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"9"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}]}