1. Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
2. J Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida, USA
3. Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, California, USA
4. Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
5. Department of Radiation Oncology, University of Florida, Gainesville, Florida, USA
6. Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri, USA