1. Department of Biology, University of Antwerp Antwerp, Belgium
2. Centre for Research and Conservation, Royal Zoological Society of Antwerp Antwerp Belgium
3. Unit of Physiology, Pathophysiology and Experimental Endocrinology, Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
4. Ethology & Animal Welfare, Agro- & Biotechnology, HUB-ODISEE University College, Brussels, Belgium