TY - JOUR T1 - Current Indications for Contrast Echocardiography AU - Becher, Harald AU - Olszewski, Robert DO - 10.15420/ecr.2007.0.2.44 UR - https://doi.org/10.15420/ecr.2007.0.2.44 JO - European Cardiovascular Disease 2007;3(2):44–8 Y1 - 2007 PB - Radcliffe Cardiology ER -