S1248 Opinions and Usage of E-Cigarettes Among U.S. Adults With Personal History of Gastrointestinal Cancer: An Analysis of a National Survey. (October 2020) - Lanka, Chandana; Twene, Philip; McKie, Charmaine; Scott, Victor; Kibreab, Angesom; Howell, Charles; Aduli, Farshad; Laiyemo, Adeyinka