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Echocardiographic laboratories activities during study period (November 2022): number of examinations and % of centers that performed: TTE = Transthoracic echocardiography, TEE = Transesophageal echocardiography, SE = Stress echocardiography, UCA = Ultrasound contrast agent, 3D TTE = Three-dimensional transthoracic echocardiography, LUS = Lung ultrasound
