@misc{indiciae7a8358f96bdc,
  title = {Four root canals in a mandibular second premolar.},
  author = {M Wong},
  year = {1991},
  doi = {10.1016/s0099-2399(06)81744-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/1940727/},
  note = {Source identifier: 1940727}
}