1. AXES Research Group, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
2. Paintings Conservation, Rijksmuseum, Museumstraat 1, 1071 XX Amsterdam, The Netherlands
3. Paintings Conservation, Royal Museum of Fine Arts Antwerp, Lange Kievitstraat 111-113 bus 100, 2018 Antwerp, Belgium