Retrospective Study
Copyright ©The Author(s) 2023.
World J Gastrointest Oncol. May 15, 2023; 15(5): 843-858
Published online May 15, 2023. doi: 10.4251/wjgo.v15.i5.843
Figure 1
Figure 1 Flow diagram of individual selection from the 11678 individuals identified to have invasive intraductal papillary neoplasm of the bile duct within the Surveillance, Epidemiology, and End Results database from 1975-2016 to identify those who were included in our descriptive (excluding incidence trends) and survival analyses. IPNB: Intraductal papillary neoplasm of the bile duct.