Levy Mitchell M, Pronovost Peter J, Dellinger R Phillip, Townsend Sean, Resar Roger K, Clemmer Terry P, Ramsay Graham
Medical Intensive Care Unit Rhode Island Hospital Providence, RI, USA.
Crit Care Med. 2004 Nov;32(11 Suppl):S595-7. doi: 10.1097/01.ccm.0000147016.53607.c4.