Graham Alan S, Ozment Caroline, Tegtmeyer Ken, Lai Susanna, Braner Dana A V
Department of Pediatrics, Division of Pediatric Critical Care, Doernbecher Children's Hospital, Portland, OR 97239-2901, USA.
N Engl J Med. 2007 May 24;356(21):e21. doi: 10.1056/NEJMvcm055053.