1. Department of Biosystems, Biosensors Group, KU Leuven, Willem de Croylaan 42, B-3001 Leuven, Belgium
2. Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, B-3001 Leuven, Belgium
3. FOx Biosystems NV, Veldstraat 120, B-9140 Temse, Belgium