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a Departments of Emergency Medicine and Medicine, The Johns Hopkins University, Baltimore, MD b Emergency Medicine and Community Health, Brown Medical School, Rhode Island Hospital, Providence, RI. PII: S0196-0644(07)00355-1 doi:10.1016/j.annemergmed.2007.03.002 © 2007 American College of Emergency Physicians. Published by Elsevier Inc. All rights reserved. | |
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