1 Unit for Anaesthesiological Investigations, Department of Acute Medicine, University Hospitals of Geneva and University of Geneva, Geneva, Switzerland. Electronic address: andre.dossantosrocha@unige.ch.
2 Unit for Anaesthesiological Investigations, Department of Acute Medicine, University Hospitals of Geneva and University of Geneva, Geneva, Switzerland.
3 Department of Medical Physics and Informatics, University of Szeged, Szeged, Hungary.