1. AXIS, NANOLab Centre of Excellence, Department of Physics, University of Antwerp, 2020 Antwerpen, Belgium
2. Conservation and Science, Rijksmuseum Amsterdam, 1071 ZC Amsterdam, The Netherlands
3. Royal Museum for Central Africa, 3080 Tervuren, Belgium
4. Center for Proteomics, University of Antwerp, 2020 Antwerpen, Belgium