@article{article22489563,
title   = {Cholinergic/opioid interaction in anterior cingulate cortex reduces the nociceptive response of vocalization in guinea pigs},
author = {Zugaib, João and Menescal-de-Oliveira, Leda},
year = {2017},
doi = {10.1016/j.brainres.2017.07.013},
journal   = {Brain Research}
}