University of Rostock, Rostock, Germany
Universitätsklinikum Knappschaftskrankenhaus Bochum GmbH, Bochum, Germany
St. Josefs Hospital - Katholisches Klinikum Bochum, Bochum, Germany
Department of Anesthesiology, Emergency and Intensive Care Medicine, University of Göttingen, Göttingen, Germany
Department of Nephrology and Medical Intensive Care, Charité - University Medical Center, Berlin, Germany
University Hospital Essen, Essen, Germany
Institut National de Chirurgie Cardiaque et de Cardiologie Interventionnelle, Luxembourg, Luxembourg
Asklepios Hospital St. Georg Hamburg, Hamburg, Germany