Targeted Neonatal Echocardiography in the Neonatal Intensive Care Unit: practice guidelines and recommendations for training. Writing Group of the American Society of Echocardiography (ASE) in collaboration with the European Association of Echocardiography (EAE) and the Association for European Pediatric Cardiologists (AEPC)
J Am Soc Echocardiogr. 2011 Oct;24(10):1057-78.
doi: 10.1016/j.echo.2011.07.014.