1. Department of Radiation OncologyInha University Hospital Incheon Republic of Korea
2. Department of Radiation OncologyYonsei University College of Medicine Seoul Republic of Korea
3. Department of Radiation OncologySamsung Medical CenterSungkyunkwan University College of Medicine Seoul Republic of Korea
4. Department of Radiation OncologySeoul St. Mary's HospitalCollege of MedicineCatholic University Seoul Republic of Korea
5. Department of Radiation OncologySeoul National University Bundang Hospital Seongnam Republic of Korea
6. Department of Radiation OncologySt. Vincent's HospitalCollege of MedicineCatholic University Suwon Republic of Korea
7. Department of Radiation OncologyKonyang University Hospital Daejeon Republic of Korea
8. Department of Radiation OncologyAsan Medical CenterUlsan University College of Medicine Seoul Republic of Korea
9. Department of Radiation OncologyNational Cancer Center Ilsan Republic of Korea
10. Department of Radiation OncologyCHA Bundang Medical CenterCHA University Seongnam Republic of Korea