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Käser, S. A.; Froelicher, J.; Li, Qiyu; Müller, S.; Metzger, U.; Castiglione, M.; Laffer, U. T.; Maurer, C. A. (2015). Adenocarcinomas of the upper third of the rectum and the rectosigmoid junction seem to have similar prognosis as colon cancers even without radiotherapy, SAKK 40/78. Langenbeck's archives of surgery, 400(6), pp. 675-682. Springer 10.1007/s00423-014-1243-1
