1. Bioinformatics Research Center, Aarhus University, Universitetsbyen 81, 3. Building 1872, DK-8000 Aarhus, Denmark
2. Centre for Mass Spectrometry Imaging, Biomolecular Sciences Research Centre, Sheffield Hallam University, Sheffield S1 1WB, UK
3. Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 82, DK-8200 Aarhus, Denmark