1. Department of Anesthesiology and Pain Medicine; Maastricht University Medical Center; Maastricht The Netherlands
2. Philips Research; Eindhoven The Netherlands
3. Department of Biochemistry; Faculty of Health Medicine and Life Science, Maastricht University; Maastricht The Netherlands
4. Philips Healthcare; Best The Netherlands
5. Delft University of Technology; Department of BioMechanical Engineering; Delft The Netherlands
6. Department of Anesthesiology; University Medical Center St. Radboud; Nijmegen The Netherlands
7. Department of Anatomy and Embryology, Faculty of Health; Medicine and Life Sciences, Maastricht University; Maastricht The Netherlands