1Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville
2Department of Intensive Care, Erasme University Hospital, Brussels, Belgium
3Department of Critical Care and Emergency Medicine, Cliniques Universitaires St. Luc, Brussels, Belgium
4Lilly Research Laboratories, Eli Lilly, Indianapolis
5Department of Intensive Care, Cochin–Port Royal University Hospital, Paris V University, Paris
6Unidad de Cuidados Intensivos, Servicio de Medicina Intensiva, Hospital Infanta Cristina, Badajoz, Spain
7Critical Care Division, Baystate Medical Center, Springfield, Mass., and Tufts University School of Medicine, Boston
8Division of Infectious Diseases, University of Ottawa, Ottawa Hospital, Ottawa, Ont., Canada