2023 Sentiment analysis of medical record notes for lung cancer patients at the Department of Veterans Affairs. Danne C. Elbers, Jennifer La, Joshua R. Minot, Robert Gramling, Mary T. Brophy, Nhan V. Do, Nathanael R. Fillmore, Peter S. Dodds, Christopher M. Danforth PLOS ONE18(1), e0280931 U.S. Veterans and VA Data Electronic Health Records Lung Cancer Natural Language Processing Clinical Notes