TY - STAND AU - Z. Wang AU - A. Shah AU - A. Tate AU - S. Denaxas AU - J. Shawe-Taylor AU - H. Hemingway BT - PLoS One DO - 10.1371/journal.pone.0030412 M1 - 1 PY - 2012 EP - e30412 T2 - PLoS One TI - Extracting diagnoses and investigation results from unstructured text in electronic health records by semi-supervised machine learning VL - 7 SN - 1932-6203 ER -