1. Clinic for Zoo Animals, Exotic Pets and Wildlife; Vetsuisse Faculty; University of Zurich; Zurich Switzerland
2. Florisbad Quaternary Research; National Museum; Bloemfontein South Africa
3. Centre for Environmental Management; University of the Free State; Bloemfontein South Africa, and
4. Zoological Garden of Halle; Halle Germany
5. Institute of Animal Science; University of Bonn; Bonn Germany