1. The Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, United Kingdom.
2. French Agency for Food, Environmental and Occupational Health and Safety (ANSES–USC EpiToxo), University of Reims Champagne-Ardenne, Reims, France.
3. Université Paris-Est, École Nationale Vétérinaire d'Alfort, UMR BIPAR, ENVA, Anses, UPEC, USC INRA, Maisons-Alfort, France.