1. Joint Research Unit IRTA-UAB in Animal Health, Animal Health Research Centre (CReSA), Campus of the Autonomous University of Barcelona (UAB), Bellaterra, Catalonia, Spain
2. IRTA, Animal Health Program, Animal Health Research Centre (CReSA), Campus of the Autonomous University of Barcelona (UAB), Bellaterra, Catalonia, Spain
3. OIE Collaborating Centre for the Research and Control of Emerging and Re-Emerging Swine Diseases in Europe (IRTA-CReSA), Bellaterra, Barcelona, Spain
4. Food and Drug Administration, Silver Spring, Maryland, United States
5. Pig Sanitation Group, Lleida, Spain
6. Department of Genetics, Autonomous University of Barcelona, Bellaterra, Spain
7. Department of Animal Science, ETSEA, University of Lleida, Lleida, Spain