Heart operations followed up.
D000367:Age Factors; D006348:Cardiac Surgical Procedures; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008722:Methods; D011183:Postoperative Complications; D013771:Tetralogy of Fallot / Q000601:surgery