1. Faculty of Veterinary Medicine; Clinical Sciences; Equine Anaesthesia and Surgery; University of Liège; Liège Belgium
2. Centre Europeen du Cheval; Vielsalm Belgium
3. Faculty of Veterinary Medicine; Quantitative Genetics; University of Liège; Liège Belgium
4. Biologie du Développement et Reproduction; Institut National de Recherche Agronomique; Jouy-en-Josas France