1. From Department of Anaesthesiology and Critical Care Medicine (N.R., G.C.B.), Department of Pediatrics (N.R.), and Department of Neurosurgery (P.P.-T., P.S., P.V.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany; Department of Neurosurgery (P.V.), Charité-Universitätsmedizin Berlin, Berlin, Germany.