1. Department of Medicine, Epidemiology, Occupational and Environmental Hygiene, National Institute for Insurance against Accidents at Work (INAIL), Rome, Italy
2. ARPACAL, Asbestos Regional Center of Calabria, Castrolibero (Cosenza), Italy
3. National Institute for Insurance against Accidents at Work (INAIL), Lamezia Terme (Catanzaro), Italy
4. ASP-SPISAL, Local Health Authority, region of Calabria, Catanzaro, Italy