@misc{indiciaee77db9d8ecc1,
  title = {Proficiency Analytical Testing Program report (March 1996).},
  author = {C A Esche and J H Groff},
  year = {1996},
  url = {https://pubmed.ncbi.nlm.nih.gov/8651084/},
  note = {Source identifier: 8651084}
}