1. Roy J. Carver Department of Biomedical Engineering University of Iowa, 5601 Seamans Center for the Engineering Arts and Sciences Iowa City Iowa USA
2. Department of Radiation Oncology University of Iowa Hospitals and Clinics Iowa City Iowa USA
3. .decimal LLC Sanford Florida USA
4. Department of Radiation Oncology Miami Cancer Institute, Baptist Health South Florida Miami Florida USA
5. Ion Beam Applications S.A., R&D Proton Therapy Louvain‐La‐Neuve Belgium
6. Department of Medical Physics, School of Medicine and Public Health University of Wisconsin Madison Wisconsin USA
7. Department of Radiation Oncology Huntsman Cancer Institute, University of Utah Salt Lake City Utah USA
8. Department of Human Oncology, School of Medicine and Public Health University of Wisconsin Madison Wisconsin USA