1. Allen DC, Cameron RI. Histopathology specimens: clinical, pathological and laboratory aspects. 1st ed. Berlin/Heidelberg: Springer; 2004.
2. Bosman FT, Carneiro F. WHO classification of tumours of the digestive system. 4th ed. Lyon: IARC Press; 2010.
3. Day DW, Jass JR, Price AB, Shepherd NA, Sloan JM, Talbot IC, Warren BF, Williams GT. Morson and Dawson’s gastrointestinal pathology. 4th ed. Oxford: Blackwell Science; 2003.
4. Fielding LP, Goldberg SM, editors. Rob and Smith’s operative surgery: surgery of the colon, rectum and anus. 5th ed. Oxford: Elsevier Science; 2002.
5. Odze RD, Goldblum JR. Surgical pathology of the GI tract, liver, biliary tract and pancreas. 2nd ed. Philadelphia: Saunders/Elsevier; 2009.