COVID-19 outbreak in healthcare workers in hospitals in Trieste, North-east Italy. Issue 3 (November 2020) - Piapan, L.; De Michieli, P.; Ronchese, F.; Rui, F.; Mauro, M.; Peresson, M.; Segat, L.; D'Agaro, P.; Negro, C.; Bovenzi, M.; Larese Filon, F.