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Deasy, W. A. G.; Cangara, M. H.; Zainuddin, A. A.; Achmad, D.; Wahid, S.; Miskad, U. A. The Expression of Chromogranin A, Syanptophysin and Ki67 in Detecting Neuroendocrine Neoplasma at High Grade Colorectal Adenocarcinoma. Open Access Maced J Med Sci 2021, 9, 1142-1147.