||Human Homo sapiens
||Tomasetti C, Li L, Vogelstein B. Stem cell divisions, somatic mutations, cancer etiology, and cancer prevention. Science. 2017 Mar 24 355(6331):1330-1334. doi: 10.1126/science.aaf9011 p.1331 right column 2nd paragraphPubMed ID28336671
|| Cancer Research UK, Statistics on preventable cancers www.cancerresearchuk.org/health-professional/cancer-statistics/risk/preventable-cancers
||P.1331 right column 2nd paragraph: "This same analytic approach can be applied to cancer types for which epidemiologic studies have indicated a less pronounced role of environmental factors. Figure 2C depicts pancreatic ductal adenocarcinomas. About 37% of these cancers are thought to be preventable (versus 89% for lung adenocarcinomas) (primary source)."