1 Department of Medical, Surgical & Health Sciences, University of Trieste, Trieste, Italy; Department of Public Health, University Health Agency Giuliano-Isontina (ASUGI), Trieste, Italy. Electronic address: l.cegolon@gmail.com.
2 Department of Medical, Surgical & Health Sciences, University of Trieste, Trieste, Italy; Occupational Medicine Unit, University Health Agency Giuliano-Isontina (ASUGI), Trieste, Italy.
3 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado.
4 Envirosafe Training & Consultants, Pittsburgh, Pennsylvania.