1. Institute of Mass Spectrometry, School of Medicine, Grove Building, Swansea University, Singleton Park, Swansea SA2 8PP, U.K., Thermo Fisher, Stafford House, Boundary Way, Hemel Hempstead, HP2 7GE, U.K., GlaxoSmithKline, New Frontiers Science Park, Third Avenue, Harlow, Essex, CM19 5AW, U.K., The School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX, U.K., and Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm SE-17177, Sweden