TY - RPRT TI - Creatine phosphokinase. A spectrophotometric method with improved sensitivity. AU - J W Hess AU - K J Murdock AU - G J Natho PY - 1968 DO - 10.1093/ajcp/50.1.89 UR - https://pubmed.ncbi.nlm.nih.gov/5659285/ ID - 5659285 ER -