1. Department of Anaesthesiology, Operative Intensive Medicine, and Pain Medicine, Klinikum St. Elisabeth Straubing, Straubing, Germany
2. Maritime Medicine, German Naval Medical Institute, Kronshagen, Germany
3. Johanna Etienne Hospital, Neuss, Germany
4. Institute of Occupational, Social and Environmental Medicine, Düsseldorf, Heinrich Heine University, Germany
5. Forschungsgruppe Experimentelle Chirurgie, Universitäts-Klinikum Düsseldorf, Düsseldorf, Germany