1. Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
2. Netherlands Proteomics Center, Padualaan 8, 3584 CH Utrecht, The Netherlands
3. Genovis AB, Scheelevägen 2, 223 63 Lund, Sweden
4. Department of Medical Microbiology, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands