1. Center for Proteomics and Metabolomics, Leiden University Medical Center (LUMC), PO Box 9600, 2300 RC, Leiden, The Netherlands
2. Department of Chemistry, Nottingham Trent University, Nottingham, NG11 0JN, U.K.
3. Spectroswiss, EPFL Innovation Park, 1015 Lausanne, Switzerland
4. Departments of Chemistry and Molecular Biosciences, and the Proteomics Center of Excellence, Northwestern University, 2145 N. Sheridan Road, Evanston, Illinois 60208, United States
5. Centre d’Immunologie Pierre Fabre, 74160 St. Julien-en-Genevois, France