The effects of natural language processing on cross-institutional portability of influenza case detection for disease surveillance. - Jeffrey P. Ferraro; Ye Ye 002; Per H. Gesteland; Peter J. Haug; Fu-Chiang Tsui; Gregory F. Cooper; Rudy Van Bree; Thomas Ginter; Andrew Nowalk; Michael M. Wagner 001 (Appl. Clin. Inform., 2017)