1. Department of Clinical Science and Education, Södersjukhuset, Center for Resuscitation Science, Karolinska Institute, Stockholm, Sweden (G.R., E.B., M. Ringh, M.J., A.C., A.N., P.N., S.F., M. Rosenqvist, J. Hollenberg).
2. Department of Cardiology, S:t Göran’s Hospital, Stockholm, Sweden (G.R.).
3. Department of Surgical Sciences, Anesthesiology and Intensive Care Medicine, Uppsala University, Sweden (S.R., H.B.).
4. Department of Medicine, Solna Karolinska Institutet, Stockholm, Sweden (L.S.).
5. Department of Anesthesiology and Intensive Care, Lund University, Sweden (C.A.).
6. Department of Caring Science, University of Borås, Sweden (J. Herlitz).