1. Biomolecular Mass Spectrometry and Proteomics Group, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
2. Netherlands Proteomics Centre, Padualaan 8, 3584 CH Utrecht, The Netherlands
3. Center for Biomedical Genetics, Padualaan 8, 3584 CH Utrecht, The Netherlands
4. Netherlands Bioinformatics Centre, Padualaan 8, 3584 CH Utrecht, The Netherlands