title: An unusual case of XXY Klinefelter's syndrome associated with cystic fibrosis.
mesh_terms: D003550:Cystic Fibrosis / Q000150:complications* / Q000175:diagnosis; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007713:Klinefelter Syndrome / Q000150:complications* / Q000175:diagnosis; D008297:Male; D013542:Sweat / Q000032:analysis