Sánchez Ferrer, Francisco Effects of Watching Cartoons During an Echocardiography on Infants and Preschool Children. A Prospective Randomized Study. [electronic resource] - Frontiers in pediatrics 2019 - 184 p. digital Publication Type: Journal Article ISSN: 2296-2360 Standard No.: 10.3389/fped.2019.00184 doi