Affiliation: | 1. Department of Epidemiology, (Unité de recherche en epidémiologie et analyse de risques appliquées aux sciences vétérinaires ‐ UREAR), FMV University of Liege, , Belgium;2. Equine clinic, Internal Medicine, FVM University of Liege, , Belgium;3. Equine clinic, Internal Medicine, FVM University of Ghent, , Belgium;4. Equine clinic, Internal Medicine, FVM, Justus‐Liebig‐University, , Giessen, Germany;5. Rossdales Equine Hospital, , Newmarket, United Kingdom |