[1] Aarhus Univ Hosp, Dept Anesthesiol, Sect Neuroanesthesia, Aarhus, Denmark
[2] Goedstrup Reg Hosp, Dept Rheumatol, Goedstrup, Denmark
[3] Aarhus Univ Hosp, Dept Intens Care Med, Aarhus, Denmark
[4] Aarhus Univ Hosp, Dept Nucl Med, Aarhus, Denmark
[5] Aarhus Univ, Dept Clin Med, Aarhus, Denmark
[6] Aarhus Univ Hosp, Dept Neurosurg, Aarhus, Denmark
[7] Aarhus Univ Hosp, Aarhus, Denmark
[8] Horsens Reg Hosp, Dept Anaesthesiol, Horsens, Denmark
[9] Aarhus Univ Hosp, Dept Nucl Med, Aarhus, Denmark
[10] Yale Univ, Sch Med, Sch Med, New Haven, CT 06510 USA