1 Department of Anesthesiology and Intensive Care Medicine, Regio Klinikum Pinneberg, Pinneberg, Germany Department of Anesthesiology (AE) and Intensive Care Medicine, Asklepios Clinic St. Georg, Hamburg, Germany Department of Anesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany, jan.hoecker@uksh.de.