1. Department of Biosystems - Biosensors group, KU Leuven, Willem de Croylaan 42, box 2428, 3001 Leuven, Belgium
2. Diagnostics Division Dept. 0NTA, Bldg. CP-1, Abbott Laboratories, 100 Abbott Park Rd., Abbott Park, Illinois 60064-6093, United States
3. Sagentia, Harston Mill, Harston, Cambridge CB227GG, UK