Cui, Di, et al. “Moderate Hypofractionated Helical Tomotherapy for Older Patients With Localized Prostate Cancer: Long-Term Outcomes of a Phase I-II Trial”. Radiology and Oncology, vol. 56, no. 2, July 2022, pp. 216-27, https://radioloncol.com/index.php/ro/article/view/3744.