1) Lloyd RV, Osamura RY, Kloppel G, et al : WHO Classification of Tumours of Endocrine Organs. 4th ed, IARC, Lyon ; 2017 : 209-39
2) DeLellis R, Lloyd RV, Heitz P, et al : WHO Classification of Tumours. Pathology & Genetics. Tumours of Endocrine Organs. 3rd ed, IARC, Lyon ; 2004 : 175-208
3) Bosman FT, Carneiro F, Hruban RH, et al : WHO Classification of Tumours of the Digestive System. 4th ed, IARC, Lyon ; 2010