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APA Citation
Layfield, L. J., Dodd, L., Factor, R., & Schmidt, R. L. (n.d.). malignancy risk associated with diagnostic categories defined by the Papanicolaou Society of Cytopathology pancreaticobiliary guidelines. Cancer cytopathology, 122(6), 420–427. http://access.bl.uk/ark:/81055/vdc_100070756641.0x000056