The impact of mismatch repair status on accuracy of clinical staging in stage II/III rectal cancer in daily practice. - Lunenberg RA; Franken IA; Braat MNGJA; Elferink MAG; van der Baan FH; Koopman M; Vink G; Intven MPW; Sijtsma FPC; Roodhart JML (European journal of cancer (Oxford, England : 1990), 2026)