Cyprus University of Technology - Cyprus International Institute for Environmental and Public Health, Harvard University - Department of Environmental Health, Harvard University - Department of Environmental Health, Universidad Autónoma de Madrid - Department of Preventive Medicine and Public Health, - Department of Medicine, Harvard University - Department of Environmental Health, Cyprus University of Technology - Cyprus International Institute for Environmental and Public Health, Harvard University - Department of Social and Behavioral Sciences, Cyprus University of Technology - Cyprus International Institute for Environmental and Public Health, National and Kapodistrian University of Athens - First Department of Surgery, Harvard University - Department of Environmental Health, Universidad Autónoma de Madrid - Department of Preventive Medicine and Public Health and Harvard University - Department of Occupational Medicine