Guest Editors: Michael T. Milano (Department of Radiation Oncology, University of Rochester Medical Center, Rochester, NY, USA); Tithi Biswas (Department of Radiation Oncology, University of Florida, Gainesville, FL, USA); Charles B. Simone II (New York Proton Center, New York, NY, USA; Memorial Sloan Kettering Cancer Center, New York, NY, USA); Simon S. Lo (Department of Radiation Oncology, University of Washington School of Medicine, Seattle, WA, USA)

Guest Editor: Alaa Abd-Elsayed (Department of Anesthesiology and Perioperative Medicine, University of Wisconsin, Madison, WI, USA)

Guest Editors: Eva Oldenburger (University Hospitals Leuven, Leuven, Belgium) and Johan Menten (University Hospitals Leuven, Leuven, Belgium)

Guest Editor: Alexander Gamble (Department of Medicine, Section of Palliative Care, Stanford University School of Medicine, Stanford, CA, USA)