%0 Journal Article %J Journal of the American Medical Informatics Association %D 2013 %T Combining rules and machine learning for extraction of temporal expressions and events from clinical narratives %A Aleksandar Kovačević %A Azad Dehghan %A Michele Filannino %A John A Keane %A Goran Nenadic %B Journal of the American Medical Informatics Association %V 20 %P 859-866 %G eng %N 5