[Determination of riboflavin in the urine of patients with malignant tumors].
D001826:Body Fluids; D006801:Humans; D009369:Neoplasms / Q000652:urine*; D012256:Riboflavin / Q000652:urine*
D012256:Riboflavin
NEOPLASMS/urine; VITAMIN B 2/urine