1 Department of Medicine and Surgery, School of Medicine, University of Milano-Bicocca, Monza, Italy.
2 Laboratory Cerba Healthcare, Milan, Italy.
3 National Center for Control and Emergency Against Animal Diseases and Central Crisis Unit - Office III, Directorate General for Animal Health and Veterinary Drugs, Italian Ministry of Health, Rome, Italy.
4 Medical Statistics and Epidemiology Unit, Campus Bio-Medico University, Rome, Italy.
5 Department of Laboratory Medicine, University Hospital of Padova, Padova, Italy.