[1
] Department of Internal Medicine, Division of Infectious Diseases, University of
Nebraska Medical Center, Omaha
[2
] Division of Pulmonary and Critical Care Medicine, University of Connecticut School
of Medicine, Farmington
[3
] Brigham and Women's Hospital and Harvard Medical School
[4
] Harvard Pilgrim Health Care Institute, Boston, Massachusetts
[5
] Department of Medicine, Critical Care Program, Queens University, Kingston, Ontario,
Canada
[6
] Division of Pulmonary, Critical Care and Sleep Medicine, University of California,
San Diego
[7
] Department of Medicine, Division of Pulmonary Critical Care and Sleep Medicine, State
University of New York at Stony Brook
[8
] Department of Surgery, Division of Trauma, Critical Care and Emergency Surgery, University
of Michigan, Ann Arbor
[9
] Department of Critical Care Medicine, National Institutes of Health, Bethesda
[10
] Johns Hopkins University School of Medicine, Baltimore, Maryland
[11
] Department of Infectious Diseases, Hospital Universitari de Bellvitge, Bellvitge
Biomedical Research Institute, Spanish Network for Research in Infectious Diseases,
University of Barcelona, Spain
[12
] Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine,
University at Buffalo, Veterans Affairs Western New York Healthcare System, New York
[13
] Thoraxzentrum Ruhrgebiet, Department of Respiratory and Infectious Diseases, EVK
Herne and Augusta-Kranken-Anstalt Bochum, Germany
[14
] Department of Pathology and Microbiology, University of Nebraska Medical Center,
Omaha
[15
] Summa Health System, Akron, Ohio
[16
] Department of Medicine, Division of Pulmonary and Critical Care Medicine, South Texas
Veterans Health Care System and University of Texas Health Science Center at San Antonio
[17
] Burns, Trauma and Critical Care Research Centre, The University of Queensland
[18
] Royal Brisbane and Women's Hospital, Queensland
[19
] School of Medicine and Pharmacology, University of Western Australia, Perth, Australia
[20
] Library and Knowledge Services, National Jewish Health, Denver, Colorado
[21
] Department of Clinical Epidemiology and Biostatistics and Department of Medicine,
McMaster University, Hamilton, Ontario, Canada