1. Karmanos Cancer Institute at McLaren‐Flint McLaren Proton Therapy Center Flint MI USA
2. Imaging and Radiation Oncology Core (IROC) Houston University of Texas MD Anderson Cancer Center Houston TX USA
3. University of Pennsylvania Philadelphia PA USA
4. Center for Proton Therapy Paul Scherrer Institute Villigen Switzerland
5. University of Texas, MD Anderson Cancer Center Houston TX USA
6. Northwestern Medicine Chicago Proton Center Warrenville IL USA
7. Applications of Detectors and Accelerators to Medicine 1217Meyrin Switzerland
8. National Cancer Centre Singapore Singapore Singapore
9. Rhode Island Hospital, The Warren Alpert Medical School of Brown University Providence RI USA
10. Massachusetts General Hospital, Burr Proton Therapy Center Boston MA
11. Harvard Medical School Cambridge MA USA
12. Memorial Sloan‐Kettering Cancer Center New York NY USA
13. Proton Therapy Division Shizuoka Cancer Center Shizuoka Japan