1. Department of Bionanoscience, Delft University of Technology, Delft, Netherlands; Utrecht, Netherlands.
2. Kavli Institute of Nanoscience, Delft University of Technology, Delft, Netherlands; Utrecht, Netherlands.
3. Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands; and Utrecht, Netherlands.
4. Netherlands Proteomics Center, Utrecht, Netherlands.