1. Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck, University of London, Malet Street, London WC1E 7HX, UK
2. European Spallation Source, The ESS Campus, Lund, Sweden, SE-221 00
3. ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell, Didcot, Oxford, OX11 0QX, UK
4. Department of Chemistry, University of Bath, Claverton Down, Bath, Avon BA2 7AY, UK
5. Department of Chemistry – Ångström and Centre for Neutron Scattering, Uppsala University, Box 538, 75121 Uppsala, Sweden