PT - JOURNAL ARTICLE AU - Borleffs, J C AU - Derksen, R H AU - Bär, D P TI - Serum myoglobin and creatine kinase concentrations in patients with polymyositis or dermatomyositis. AID - 10.1136/ard.46.2.173 DP - 1987 Feb 01 TA - Annals of the Rheumatic Diseases PG - 173--174 VI - 46 IP - 2 4099 - http://ard.bmj.com/content/46/2/173.short 4100 - http://ard.bmj.com/content/46/2/173.full SO - Ann Rheum Dis1987 Feb 01; 46