1 CREAGEN - Environmental, Genetic and Nutritional Epidemiology Research Center, Section of Public Health, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.
2 Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts, USA.
3 School of Public Health, University of California Berkeley, Berkeley, California, USA.
4 Norwich Medical School, University of East Anglia, Norwich, United Kingdom.