title: Letter: Cyclic G.M.P. excretion and hepatoma.
mesh_terms: D006528:Carcinoma, Hepatocellular / Q000652:urine*; D006152:Cyclic GMP / Q000652:urine*; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000652:urine*; D008297:Male; D012737:Sex Factors
chemical_list: D006152:Cyclic GMP