@article{article,
  author = {Michael Welch and C.P. Phinney and Reenie Parris and Willie May and G Heo and A. Henrion and G O{\textquoteright}Conner and Heinz Schimmel},
  title = {CCQM-K12: The Determination of Creatinine in Serum},
  year = {2003},
  number = {40},
  month = {2003-12-01},
  publisher = {Metrologia},
  language = {en},
}