Factors determining the effect of prophylactic cranial irradiation (PCI) in patients with stage-III nonsmall cell lung cancer: exploratory subgroup analyses of the NVALT-11/DLCRG-02 phase-III study. (3rd October 2019) - Witlox, W. J. A.; Ramaekers, B. L. T.; Groen, H. J. M.; Dingemans, A. M.; Praag, J.; Belderbos, J.; van der Noort, V.; van Tinteren, H.; Joore, M. A.; De Ruysscher, D. K. M.