title: Vitamin B6 intake and urinary excretion of 4-pyridoxic acid per gram of creatinine in a rural Puerto Rican area.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003404:Creatinine / Q000652:urine*; D005260:Female; D006801:Humans; D007539:Isonicotinic Acids / Q000652:urine*; D008297:Male; D008875:Middle Aged; D009749:Nutrition Surveys; D011647:Puerto Rico; D011735:Pyridoxic Acid / Q000652:urine*; D011736:Pyridoxine / Q000378:metabolism*; D012424:Rural Population
chemical_list: D007539:Isonicotinic Acids; D011735:Pyridoxic Acid; D003404:Creatinine; D011736:Pyridoxine