1. Interdisciplinary Department of Medicine, Section of Occupational Medicine, University of Bari, Bari, Italy;
2. Department of Earth and Geo-Environmental Sciences, University of Bari, Bari, Italy;
3. Environmental Research Center, Clinical Scientific Institutes Maugeri SpA SB, Pavia, Italy;
4. Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Section of Public Health and Human Sciences, University of Brescia, Brescia, Italy