1. Institute of Physical and Theoretical Chemistry, University of Bonn, Wegelerstraße 12, 53115 Bonn, Germany
2. EaStCHEM School of Chemistry, Biomedical Sciences Research Complex, and Centre of Magnetic Resonance, University of St Andrews North Haugh, St Andrews KY16 9ST, U.K.
3. Department of Chemistry and Konstanz Research School Chemical Biology, University of Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
4. N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Lavrentieva aven 9, 630090 Novosibirsk, Russia
5. Institute of Physical and Theoretical Chemistry and Center of Biomolecular Magnetic Resonance, Goethe University, 60438 Frankfurt am Main, Germany
6. Department of Chemistry and Chemical Biology, and ACERT, National Biomedical Center for Advanced Electron Spin Resonance Technology, Cornell University, Ithaca, New York 14853-1301, United States
7. Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany
8. Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot 76100, Israel
9. Department of Chemistry and Applied Biosciences, ETH Hönggerberg, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
10. Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee 37232, United States
11. School of Chemistry, University of Southampton, Highfield Campus, Southampton SO17 1BJ, U.K.
12. SUPA School of Physics and Astronomy and BSRC, University of St Andrews, North Haugh, St Andrews KY16 9SS, U.K.
13. Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
14. Department of Chemistry, Bar Ilan University, Ramat Gan 5290002, Israel
15. Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
16. Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
17. Department of Chemistry, Centre for Advanced Electron Spin Resonance, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K.
18. Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy