Stereotactic ablative radiotherapy with or without immunotherapy for early-stage or isolated lung parenchymal recurrent node-negative non-small-cell lung cancer: an open-label, randomised, phase 2 trial.Chang JY, Lin SH, Dong W, et al. Lancet. 2023 Sep 9;402(10405):871-881. doi: 10.1016/S0140-6736(2…