@misc{indiciae11d85d2e2585,
  title = {Preoptic area opioids and opiate receptors increase during pregnancy and decrease during lactation.},
  author = {R P Hammer and R S Bridges},
  year = {1987},
  doi = {10.1016/0006-8993(87)90238-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/2823974/},
  note = {Source identifier: 2823974}
}