1. Department of Clinical Sciences, Companion and Equine Animals, Ophthalmology, Veterinary Teaching Hospital of the University of Liège University of Liège Liège Belgium
2. Center for Oxygen Research and Development, Institute of Chemistry University of Liège Liège Belgium
3. Department of Clinical Sciences, Equine Surgery, Veterinary Teaching Hospital of the University of Liège University of Liège Liège Belgium