Nationwide implementation of the international multidisciplinary best-practice for locally advanced pancreatic cancer (PREOPANC-4): study protocol. - Stoop, T. F.; Seelen, L. W. F.; van 't Land, F. R.; van der Hout, A. C.; Scheepens, J. C. M.; Ali, M.; Stiggelbout, A. M.; van der Kolk, B. M.; Bonsing, B. A.; Lips, D. J.; de Groot, D. J. A.; van Veldhuisen, E.; et al. (BMC Cancer, 2025)