1. Department of Clinical Sciences, Faculty of Veterinary Medicine Utrecht University Utrecht The Netherlands
2. Dierenartsenpraktijk Horst e.o. Horst The Netherlands
3. Equine Fertility Group, Faculty of Veterinary Medicine Universidad CEU Cardenal Herrera, CEU Universities, Alfara del Patriarca Valencia Spain
4. Institute of Farm Animal Genetics Friedrich‐Loeffler‐Institut Neustadt am Rübenberge Germany