Study Design
This was a cross-sectional comparative study conducted at the Electrophysiology and Cardiac Pacing Unit at ASST Papa Giovanni XXIII Hospital, Bergamo, Italy. The study period was selected based on the epidemiology of the COVID-19 epidemic in the area (5), from February 21st to April 5th 2020. As reference period, we selected the same timeframe during the previous year (February 21st - April 5th 2019).