1 Technical Medicine, University of Twente, Drienerlolaan 5, 7522 NB, Enschede, The Netherlands.
2 Animals in Science, Eurogroup for Animals, Hertogstraat 29, 1000, Brussels, Belgium.
3 Department of Signal Processing Systems, Faculty of Electrical Engineering, Eindhoven University of Technology, PO Box 513, 5600, MB, Eindhoven, The Netherlands.
4 Department of Applied Mathematics, Faculty of Electrical Engineering, Mathematics, and Computer Science, University of Twente, Drienerlolaan 5, 7522 NB, Enschede, The Netherlands.
5 Cardiovascular and Respiratory Physiology Group, Faculty of Science and Technology, University of Twente, Drienerlolaan 5, 7522 NB, Enschede, The Netherlands. vanmeurs@orange.fr.