1. Michael
Barber Centre for Mass Spectrometry, Manchester Institute for Biotechnology, University of Manchester, Princess Road, Manchester, M1 7DN, U.K.
2. Department
of Molecular and Cellular Biology, College of Biological Science, University of Guelph, Guelph, ON N1G 2W1, Canada
3. Department
of Physics, University of Guelph, Guelph, ON N1G 2W1, Canada
4. Manchester
Pharmacy School, University of Manchester, Stopford Building, Oxford Road, Manchester, M13 9PT, U.K.