In Reply to Kalman et al

Affiliations

• ¹ Department of Radiation Oncology, New York Proton Center, New York, New York.
• ² Department of Radiation Oncology, New York Proton Center, New York, New York; Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York.
• ³ Department of Physics, New York Proton Center, New York, New York.
• ⁴ Department of Physics, New York Proton Center, New York, New York.
• ⁵ Department of Physics, New York Proton Center, New York, New York.
• ⁶ Department of Radiation Oncology, New York Proton Center, New York, New York; Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York. Electronic address: [email protected].