1 Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden; Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden.
2 National Board of Health and Welfare, Sweden.
3 Swedish Intensive Care Registry, Värmland County Council, Karlstad, Sweden; Department of Cardiothoracic and Vascular Surgery, Heart Centre, Linköping University Hospital, Linköping, Sweden; Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.
4 The Public Health Agency of Sweden, Sweden.
5 Division of Inflammation and Infection, Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden; Department of Infectious Diseases, University Hospital Region Östergötland, Sweden. Electronic address: hakan.hanberger@liu.se.