1. Department
of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg SE-412 96, Sweden
2. National
Centre for Imaging Mass Spectrometry, Chalmers University of Technology and University of Gothenburg, Gothenburg SE-412 96, Sweden
3. Department
of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg SE-412 96, Sweden
4. Cardiovascular
and Metabolic Diseases, Innovative Medicines and Early Development
Biotech Unit, AstraZeneca, Mölndal SE-431 50, Sweden
5. Laboratory
for Biological Geochemistry, École Polytechnique Fédérale
de Lausanne and Center for Advanced Surface Analysis, Institute of
Earth Sciences, University of Lausanne, Lausanne CH-1015, Switzerland