GABERMAN, P Relation of creatinine to nonprotein nitrogen in azotemic states. [electronic resource] - Journal of the American Medical Association Dec 1950 - 1246-9 p. digital Publication Type: Journal Article ISSN: 0002-9955 Standard No.: 10.1001/jama.1950.02920150020006 doi Subjects--Topical Terms: BloodCreatinineHumansNitrogen