1. Regional Reference Center for Mycobacteria, Microbiology and Virology Laboratory
2. Infectious Diseases Unit, Niguarda Hospital, Milan
3. Social Hygiene Dispensary, Turin
4. Cytogenetics and Genetics Unit
5. Microbiology Laboratory, Vall d'Hebron Hospital, Autonoma University, Barcelona, Spain
6. Microbiological and Virological Serum-Immunology Laboratory, Careggi Hospital, Florence
7. Microbiology Laboratory, Bambino Gesù Hospital, Rome
8. Clinical Laboratory, Sant'Anna Hospital, Como, Italy