1. Department
of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
2. Michael
Barber Centre for Collaborative Mass Spectrometry, Manchester Institute
of Biotechnology, and Photon Science Institute, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, United Kingdom
3. Waters Corporation, Stamford
Avenue, Altrincham Road, Wilmslow, SK9 4AX, United Kingdom