1. Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
2. Department of Applied Physics, Aalto University School of Science,
P.O. Box 15100, FI-00076 Aalto, Finland
3. Diamond Light Source Ltd., Harwell Science and Innovation Campus, Fermi Avenue, Didcot OX11 0DE, United Kingdom
4. Institute of Biochemistry, Faculty of Life Science, Leipzig University, Brüderstrasse 3, D 04103 Leipzig, Germany