1. From the Department of Critical Care, University Medical Center Groningen, University of Groningen, the Netherlands (N.M.H., W.M.v.d.B.)
2. Department of Intensive Care Medicine (C.S.G.), Brain Center Rudolf Magnus, University Medical Center Utrecht, the Netherlands
3. Department of Neurology and Neurosurgery (C.S.G.), Brain Center Rudolf Magnus, University Medical Center Utrecht, the Netherlands
4. Department of Intensive Care (J.H.), Academic Medical Center, University of Amsterdam, the Netherlands.
5. Department of Neurosurgery, Neurosurgical Center Amsterdam (B.A.C., D.V.), Academic Medical Center, University of Amsterdam, the Netherlands.