OPEN HEART SURGERY.
D000293:Adolescent; D006348:Cardiac Surgical Procedures; D002648:Child; D006321:Heart; D006330:Heart Defects, Congenital; D006354:Heart, Artificial; D006801:Humans; D012214:Rheumatic Heart Disease; D013903:Thoracic Surgery
ADOLESCENCE; CHILD; HEART DEFECTS, CONGENITAL; HEART SURGERY; HEART, MECHANICAL; RHEUMATIC HEART DISEASE