Echocardiography.
D006332:Cardiomegaly / Q000175:diagnosis; D003490:Cyanosis / Q000175:diagnosis; D004452:Echocardiography; D006331:Heart Diseases / Q000175:diagnosis*; D006337:Heart Murmurs; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000175:diagnosis; D008946:Mitral Valve Stenosis / Q000175:diagnosis; D012127:Respiratory Distress Syndrome, Newborn / Q000175:diagnosis