1. Cancer statistics, 2020
2. Howlader N, et al. https://seer.cancer.gov/csr/1975_2018/. Accessed April 28, 2021.
3. [dataset] Surveillance, Epidemiology and End Results (SEER) Program SEER∗Stat Database. Incidence-Based Mortality - SEER Research Data, 9 Registries, Nov 2019 Sub (1975-2017) - Linked To County Attributes - Time Dependent (1990-2017) Income/Rurality, 1969-2018 Counties, National Cancer Institute, DCCPS, Surveillance Research Program, released April 2020, based on the November 2019 submission. Accessed May 19, 2021.
4. [dataset] Surveillance, Epidemiology and End Results (SEER) Program SEER∗Stat Database. Incidence - SEER Research Data, 9 Registries, Nov 2019 Sub (1975-2017) - Linked To County Attributes - Time Dependent (1990-2017) Income/Rurality, 1969-2018 Counties, National Cancer Institute, DCCPS, Surveillance Research Program, released April 2020, based on the November 2019 submission. Accessed May 19, 2021.
5. Primary small intestinal neuroendocrine tumors are highly prevalent and often multiple before metastatic disease develops