1. Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
2. Institute
for Biomedical Engineering, ETH Zurich and University of Zurich, Gloriastrasse 35, CH-8092 Zurich, Switzerland
3. Skope Magnetic Resonance Technologies AG, Gladbachstrasse 105, CH-8044 Zurich, Switzerland