1. Natural History Museum of Denmark; University of Copenhagen; Øster Voldgade 5-7 1350 Copenhagen Denmark
2. Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health Science; University of Copenhagen; Blegdamsvej 3b 2200 Copenhagen Denmark
3. Disease Systems Biology Program, Novo Nordisk Foundation Center for Protein Research; Faculty of Health Science; University of Copenhagen; Blegdamsvej 3b 2200 Copenhagen Denmark
4. Scientific Department; National Gallery London; Trafalgar Square London WC2N 5DN UK
5. Conservation Department; National Gallery London; Trafalgar Square London WC2N 5DN UK