@misc{indiciaeed05f14fa873,
  title = {Statement on time-limited certification.},
  author = {C F Piel},
  year = {1986},
  doi = {10.1001/archpedi.1986.02140190022014},
  url = {https://pubmed.ncbi.nlm.nih.gov/3962931/},
  note = {Source identifier: 3962931}
}