1. Living Systems Institute, Department of Biosciences, University of Exeter, Stocker Road, Exeter, EX4 4QD, U.K.
2. CPI, Darlington DL1 1GL, U.K.
3. Applied Photophysics Ltd, Leatherhead KT227BA, U.K.
4. Analytical Sciences, Biopharmaceutical Development, BioPharmaceuticals R&D, AstraZeneca, Milstein Building, Granta Park, Cambridge CB21 6GH, U.K.
5. Alan Turing Institute, British Library, London NW1 2DB, U.K.