1. Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, CH-8092 Zurich, Switzerland and Department of Electronics and Communications Engineering, Tampere University of Technology, BioMediTech, Finn-Medi 1 L 4, Biokatu 6, FI-33520 Tampere, Finland
2. Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
3. Department of Electronics and Communications Engineering, Tampere University of Technology, BioMediTech, Finn-Medi 1 L 4, Biokatu 6, FI-33520 Tampere, Finland