{"groups":[{"description":"En-bloc resection of surrounding tissues and organs when located within 1 to 2 cm from the surface tumor, even when not infiltrated.\n\ntherapeutic conventional surgery","id":"FG000","title":"Surgery Alone"},{"description":"3D-CRT or IMRT to a dose of 50.4 Gy/28 daily fractions\n\ntherapeutic conventional surgery\n\n3-dimensional conformal radiation therapy","id":"FG001","title":"Preoperative Radiotherapy Followed by En-bloc Surgery"}],"periods":[{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"22"},{"groupId":"FG001","numSubjects":"25"}],"type":"Death"},{"reasons":[{"groupId":"FG000","numSubjects":"4"},{"groupId":"FG001","numSubjects":"7"}],"type":"Lost to Follow-up"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"133"},{"groupId":"FG001","numSubjects":"133"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"107"},{"groupId":"FG001","numSubjects":"101"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"26"},{"groupId":"FG001","numSubjects":"32"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}],"recruitmentDetails":"A total of 266 (216 by EORTC members and 50 by non-EORTC members) patients were registered by 30 institutions between January 18, 2012 and April 10, 2017."}