21 Lazzerini Lazzerini PE PE Laghi-Pasini Laghi-Pasini F F Acampa Acampa M M Boutjdir Boutjdir M M Capecchi Capecchi PL PL IL-6 (Interleukin 6) Blockade and Heart Rate Corrected QT Interval Prolongation in COVID-19 IL-6 (Interleukin 6) Blockade and Heart Rate Corrected QT Interval Prolongation in COVID-19 Circ Arrhythm Electrophysiol Circ Arrhythm Electrophysiol 2020 2020 13 13 9 9 e008791 e008791 10.1161/CIRCEP.120.008791 10.1161/CIRCEP.120.008791 32702997 32702997. Here, IL6 is linked to COVID-19.