PET-guided omission of radiotherapy in early-stage unfavourable Hodgkin lymphoma (GHSG HD17): a multicentre, open-label, randomised, phase 3 trialLancet Oncol. 2021 Feb;22(2):223-234. doi: 10.1016/S1470-2045(20)30601-X.PMID: 33539742 DOI: …