TY  - RPRT
TI  - Preoptic area opioids and opiate receptors increase during pregnancy and decrease during lactation.
AU  - R P Hammer
AU  - R S Bridges
PY  - 1987
DO  - 10.1016/0006-8993(87)90238-1
UR  - https://pubmed.ncbi.nlm.nih.gov/2823974/
ID  - 2823974
ER  -