The Papanicolaou Society of Cytopathology guidelines for pancreaticobiliary tract cytology: a new installment in the "Bethesda" style of guidelines from the Papanicolaou Society of Cytopathology
Diagn Cytopathol. 2014 Apr;42(4):283-4.
doi: 10.1002/dc.23129.
Epub 2014 Feb 19.