Echocardiography in the time of Covid-19: Ultrasound enhancing agents save time and augment diagnostic information. - Sperling D; Lai AC; Bienstock SW; Samtani R; Beerkens F; Satish M; Pulaski M; Edens M; Oates C; Kocovic N; Buckley S; Giustino G; et al. (International journal of cardiology, 2022)