Su richiesta degli organizzatori si rende noto quanto segue: ECQT20 : IV European Conference on Queueing Theory July 20-22, 2020 Madrid (Spain) IMPORTANT ANNOUNCEMENT Due to the COVID-19/SARS-CoV-2 outbreak, we regrettably must announce that ECQT-20 is CANCELLED and is postponed to a time when the situation becomes more stable. We are very sorry for the inconvenience this situation may cause, and gratefully appreciate if you could circulate this information to any appropriate channel. Kind regards, The Organizing Committee