1. Medical Systems Biophysics and Bioengineering, Leiden Academic Centre for Drug Research, Faculty of Mathematics and Natural Sciences, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
2. Leiden Institute of Physics, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
3. AMOLF Institute, Science Park 104, 1098 XG Amsterdam, The Netherlands
4. The Maastricht MultiModal Molecular Imaging Institute (M4I), Division of Imaging Mass Spectrometry, Maastricht University, Universiteitssingel 50, 6229 ER Maastricht, The Netherlands
5. Department of Chemistry & Biochemistry, University of Maryland, College Park, Maryland 20742, United States