Juan M Pericàs1, Caterina Clotas1, Eva Padrosa1, Ana Fernandez2. 1. Health Inequalities Research Group-Employment Conditions Network (GREDS-Emconet), Universitat Pompeu Fabra-Johns Hopkins University Public Policy Center, Barcelona 08023, Spain. 2. Community Health Service, Public Health Agency of Barcelona, Barcelona 08023, Spain. Electronic address: anafezsez@gmail.com.