title: Echocardiographic diagnosis of primitive ventricle with two atrioventricular valves.
mesh_terms: D002648:Child; D004452:Echocardiography; D006330:Heart Defects, Congenital / Q000175:diagnosis*; D006352:Heart Ventricles / Q000002:abnormalities; D006801:Humans; D007223:Infant; D008297:Male