1. ITI/LARSyS, Funchal, Portugal, and FCT/NOVA University of Lisbon, Lisbon, Portugal
2. University of Greenwich, London, UK and ITI/LARSyS, Funchal, Portugal
3. ITI/LARSyS, Funchal, Portugal
4. Hochschule Düsseldorf, University of Applied Sciences, Düsseldorf, Germany
5. Plux Wireless Biosignals, and FCT/NOVA University of Lisbon, Lisbon, Portugal