1. Task Group 203 Department of Radiation Oncology University of Colorado School of Medicine Aurora CO 80045USA
2. Task Group 203 University of Pennsylvania Perelman Center for Advanced Medicine Philadelphia PA 19104USA
3. Department of Radiation Physics UT MD Anderson Cancer Center Houston TX 77030USA
4. Department of Radiation Oncology University of Chicago Chicago IL 60637USA
5. Department of Radiation Oncology UT Health Sciences Center San Antonio TX 78229USA
6. Division of Radiological Sciences St. Jude Children's Research Hospital Memphis TN 38105USA
7. Department of Radiotherapy Catharina Hospital Eindhoven the Netherlands
8. Department of Radiation Oncology University of Colorado School of Medicine Aurora CO 80045USA
9. Department of Radiation Oncology Allegheny General Hospital Pittsburg PA 15212USA
10. Department of Radiation Oncology Tri‐State Regional Cancer Center Ashland KY 41101USA
11. Department of Radiology Johns Hopkins University School of Medicine Baltimore MD 21287USA
12. Department of Radiation Oncology University of Alabama Birmingham AL 35249USA
13. Department of Radiation Oncology University of Michigan Ann Arbor MI 48109USA
14. Consultant Medtronic Inc. Mounds View MN55112USA