TY  - RPRT
TI  - Circulating opioids: possible physiological roles in central nervous function.
AU  - J L Henry
PY  - 1982
DO  - 10.1016/0149-7634(82)90040-9
UR  - https://pubmed.ncbi.nlm.nih.gov/6184658/
ID  - 6184658
ER  -