Automated Identification of Postoperative Complications Within an Electronic Medical Record Using Natural Language Processing - Murff, HJ; FitzHenry, F; Matheny, ME; Gentry, N; Kotter, KL; Crimin, K; Dittus, RS; Rosen, AK; Elkin, PL; Brown, SH; Speroff, T (JAMA, 2011)