Ehokardiografija u vrijeme COVID-19 pandemije : preporuke i aktivnosti Radne skupine za ehokardiografiju i slikovne metode u kardiologiji Hrvatskoga kardiološkog društva = Echocardiography during COVID-19 pandemic : recommendations and activities of the Working Group on Echocardiography and Cardiac Imaging Modalities of the Croatian Cardiac Society - Šeparović-Hanževački, Jadranka (Array, 2020)