Proton versus photon radiotherapy for patients with oropharyngeal cancer in the USA: a multicentre, randomised, open-label, non-inferiority phase 3 trial. - Frank, Steven J; Busse, Paul M; Lee, J Jack; Rosenthal, David I; Hernandez, Mike; Swanson, David M; Garden, Adam S; Gunn, G Brandon; Patel, Samir H; Snider, James W; Ma, Daniel J; Molitoris, Jason K; et al. (Lancet, 2026)