Evaluation of prognostic factors after primary chemoradiotherapy of anal cancer: A multicenter study of the German Cancer Consortium-Radiation Oncology Group (DKTK-ROG). - Martin, D.; Schreckenbach, T.; Ziegler, P.; Filmann, N.; Kalinauskaite, G.; Tinhofer, I.; Budach, V.; Gani, C.; Zips, D.; Schimek-Jasch, T.; Schäfer, H.; Grosu, A.L.; et al. (Radiotherapy & Oncology, 2022)