Radiotherapy quality assurance for mesorectum treatment planning within the multi-center phase II STAR-TReC trial: Dutch results

R.P.J. van den Ende^*, F.P. Peters, E. Harderwijk, H. Rutten, L. Bouwmans, M. Berbee, R.A.M. Canters, G. Stoian, K. Compagner, T. Rozema, M. de Smet, M.P.W. Intven, R.H.N. Tijssen, J. Theuws, P. van Haaren, B. van Triest, D. Eekhout, C.A.M. Marijnen, U.A. van der Heide, E.M. Kerkhof