Sittig Dean F, Classen David C
University of Texas at Houston-Memorial Hermann Center for Healthcare Quality and Safety, University of Texas School of Health Information Sciences, 6410 Fannin St, UTPB 1100.43, Houston, TX 77030, USA.
JAMA. 2010 Feb 3;303(5):450-1. doi: 10.1001/jama.2010.61.