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Engstrom, Paul F., Juan Pablo Arnoletti, Al B. Benson, Yi-Jen Chen, Michael A. Choti, Harry S. Cooper, Anne Covey, et al. “NCCN Clinical Practice Guidelines in Oncology: colon cancer.” Journal of the National Comprehensive Cancer Network : JNCCN 7, no. 8 (September 2009): 778–831. https://doi.org/10.6004/jnccn.2009.0056.

Engstrom PF, Arnoletti JP, Benson AB, Chen Y-J, Choti MA, Cooper HS, et al. NCCN Clinical Practice Guidelines in Oncology: colon cancer. Journal of the National Comprehensive Cancer Network : JNCCN. 2009 Sep;7(8):778–831.

Engstrom, Paul F., et al. “NCCN Clinical Practice Guidelines in Oncology: colon cancer.” Journal of the National Comprehensive Cancer Network : JNCCN, vol. 7, no. 8, Sept. 2009, pp. 778–831. Epmc, doi:10.6004/jnccn.2009.0056.

Engstrom PF, Arnoletti JP, Benson AB, Chen Y-J, Choti MA, Cooper HS, Covey A, Dilawari RA, Early DS, Enzinger PC, Fakih MG, Fleshman J, Fuchs C, Grem JL, Kiel K, Knol JA, Leong LA, Lin E, Mulcahy MF, Rao S, Ryan DP, Saltz L, Shibata D, Skibber JM, Sofocleous C, Thomas J, Venook AP, Willett C, National Comprehensive Cancer Network. NCCN Clinical Practice Guidelines in Oncology: colon cancer. Journal of the National Comprehensive Cancer Network : JNCCN. 2009 Sep;7(8):778–831.