Friday, October 10, 2008 - 5:07PM EST

United States

Washington, D.C.

Name of AuthorInstitutional Affiliation
Eliasson AHPulmonary and Critical Care Medicine Service, Department of Medicine, Walter Reed Army Medical Center, Washington, DC 20307-5001, USA. arn.eliasson@us.army.mil
Lettieri CJPulmonary and Critical Care Medicine Service, Department of Medicine, Walter Reed Army Medical Center, Washington, DC 20307-5001, USA.