During the period 2009-2013 I was head of the biostatistics Unit and responsible for clinical epidemiology in two main research hospital in Milan (Italy). Afterwards, during the period the period 2013-2015, I joined the department of Epidemiology and Preventive Medicine of the University of Regensburg (Germany). In 2015-2016 I joined the Nutritional Methodology and Biostatistics Group at the International Agency for Research on Cancer of the World Health Organization in Lyon (France).