Vargas, R., Patarroyo, O., Cañadas, R., & Ovalle, A. (2020). Intraductal papillary neoplasia of the bile duct (IPNB): case report and literature review. evista e Gastroenterología el erú, 40(3), 278–83. https://doi.org/10.47892/rgp.2020.403.1130