1. Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
2. Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany
3. Center for Free-Electron Laser Science, Notkestrasse 85, 22607 Hamburg, Germany
4. Helmholtz-Zentrum Berlin GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
5. University of Jyväskylä, P.O. Box
35, 40014 Jyväskylä, Finland
6. University of Potsdam, Karl-Liebknecht-Strasse
24-25, 14476 Potsdam, Germany
7. University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany