1. Mass Spectrometry Laboratory, MolSys Research Unit, Quartier Agora, University of Liège, Allée du Six Août 11, B-4000 Liège, Belgium
2. Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry, Maastricht, Limburg, Netherlands
3. Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
4. Commissariat à l’Energie Atomique, DRF/Institut Joliot/SIMOPRO, Université Paris Sud, 91191 Gif-sur-Yvette, France