평균 추적기간은 14.3개월이었고 방사선 추적은 치료 개시 후부터 6개월, 이후 3개월까지 4주에 한 번씩 실시되었다.
The mean follow-up period was 14.3 months, and radiological follow-ups were carried out every 4 weeks starting from 6 months after initiation of treatment up to 3 months thereafter.