@misc{indiciae6dcb242a9ec1,
  title = {Opioids: first lessons from knockout mice.},
  author = {B L Kieffer},
  year = {1999},
  doi = {10.1016/s0165-6147(98)01279-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/10101958/},
  note = {Source identifier: 10101958}
}