1. Istituto Superiore di Sanità (ISS), Rome, Italy
2. Policlinico Agostino Gemelli (UCSC), Rome, Italy
3. University of Leeds (UoL), Leeds, UK
4. Norwegian Institute of Public Health (NIPH), Oslo, Norway
5. Norwegian Veterinary Institute (NVI), Oslo, Norway
6. Hull Royal Infirmary, Hull, UK