title: Discrepancy between arterial ferritin levels and the presence of digital clubbing.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D005293:Ferritins / Q000097:blood*; D006330:Heart Defects, Congenital / Q000097:blood; D006801:Humans; D008297:Male; D010005:Osteoarthropathy, Secondary Hypertrophic / Q000097:blood*
chemical_list: D005293:Ferritins