Pediatrics: cardiology.
D000367:Age Factors; D006348:Cardiac Surgical Procedures / Q000379:methods; D002309:Cardiology; D002648:Child; D002675:Child, Preschool; D004452:Echocardiography; D005080:Exercise Test; D006330:Heart Defects, Congenital / Q000601:surgery*; D006801:Humans; D007223:Infant; D010372:Pediatrics