@misc{indiciae69f470aa25a7, title = {Decrease of tolerance and physical dependence on morphine by drugs affecting brain serotonin.}, author = {E Contreras and L Tamayo and L Quijada and M Muñoz}, year = {1980}, url = {https://pubmed.ncbi.nlm.nih.gov/6969114/}, note = {Source identifier: 6969114} }