@misc{indiciaefd02fbddaecb,
  title = {When to spay.},
  author = {D G Campbell},
  year = {1988},
  doi = {10.1136/vr.122.14.339},
  url = {https://pubmed.ncbi.nlm.nih.gov/3381446/},
  note = {Source identifier: 3381446}
}