Wismayer, Richard, Julius Kiwanuka, Henry Wabinga, and Michael Odida. “Association Between Plasma CEA Level and Tissue CEA Density With Clinical and Histopathological Features of Colorectal Cancer”. Achievements and Challenges of Medicine and Medical Science Vol. 1 (November 18, 2024): 132–154. Accessed July 4, 2026. https://stm.bookpi.org/ACMMS-V1/article/view/16203.