@article{articlecd693707,
title   = {Periaqueductal gray cholecystokinin infusions block morphine-induced disruption of maternal behavior},
author = {Miranda-Paiva, C. M and Canteras, Newton Sabino and Sukikara, Marcia Harumi and Nasello, Antônia Gladys and Mackwiak, I. I and Felicio, Luciano Freitas},
year = {2007},
doi = {10.1016/j.peptides.2006.11.005},
journal   = {Peptides}
}