1. Department of Chemistry and Bioscience, Section of Biology and Environmental Science, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg Ø, Denmark.
2. Aalborg Zoo, Mølleparkvej 63, 9000, Aalborg, Denmark.
3. National Institute of Aquatic Resources, Technical University of Denmark, Vejlsøvej 39, 8600 Silkeborg, Denmark.
4. Department of Nuclear Medicine and PET Center, Institute of Clinical Medicine, Aarhus University Hospital, Nørrebrogade 44, 10C, 8000 Aarhus, Denmark.
5. Alfred Wegener Institute, Hafenstraße 43, D-25992 List, Sylt, Germany.
6. Department of Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
7. National Institute of Aquatic Resources, Technical University of Denmark, Jægersborg Alle 1, 2920, Denmark.