Research Paper: Improving Ambulatory Prescribing Safety with a Handheld Decision Support System: A Randomized Controlled Trial. - Eta S. Berner; Thomas K. Houston; Midge N. Ray; Jeroan J. Allison; Gustavo R. Heudebert; W. Winn Chatham; John I. Kennedy Jr.; Gerald L. Glandon; Patricia A. Norton; Myra A. Crawford; Richard S. Maisiak (J. Am. Medical Informatics Assoc., 2006)