“Endogenous Serotonin System Does Not Participate in the Withdrawal Opiate, But Its Inhibition by Stimulation 5-HT1A Receptor Increases the Effectiveness of the Clonidine in Rats El Sistema endógeno De Serotonina No Participa En La Abstinencia opiácea. ”. Health and Addictions Salud Y Drogas, vol. 3, no. 1, June 2003, https://doi.org/10.21134/haaj.v3i1.150.