1. Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
2. ETH and University of Zürich, Institute for Biomedical Engineering, 8092 Zürich, Switzerland.
3. Carl Zeiss SMT GmbH, 73447 Oberkochen, Germany.
4. Clariant AG, 83052 Bruckmühl, Germany.
5. ETH Zürich, Institute for Chemical and Bioengineering, 8093 Zürich, Switzerland.