1. Abberior GmbH Hans Adolf Krebs Weg 1 37077 Göttingen Germany
2. Department of Nanobiophotonics Max Planck Institute for Biophysical Chemistry (MPIBPC) Am Fassberg 11 37077 Göttingen Germany
3. Abberior-Instruments GmbH Hans Adolf Krebs Weg 1 37077 Göttingen Germany
4. Institute of Organic and Biomolecular Chemistry Georg-August University Tammannstr. 2 37077 Göttingen Germany