1 Research Department, Research and Development Institute for Bovine Balotesti, Balotesti, Romania.
2 Department Formative Science in Animal Breeding and Food Industry, University of Agronomic Sciences and Veterinary Medicine of Bucharest, Bucharest, Romania.
3 Clinic for Reproduction and Large Animals - Section for Ruminants, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia.
4 Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands.
5 Epidemiology Department, Royal GD, Deventer, Netherlands.