Gledhill, R F Race-gender differences in serum creatine kinase activity: a study among South Africans. [electronic resource] - Journal of neurology, neurosurgery, and psychiatry Feb 1988 - 301-4 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0022-3050 Standard No.: 10.1136/jnnp.51.2.301 doi Subjects--Topical Terms: AdultCreatine Kinase--bloodEthnicityFemaleHumansMalePhysical ExertionReference ValuesSex FactorsSouth Africa