“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 3, no. 1 (June 30, 2003). Accessed July 25, 2026. https://ojs.haaj.org/haaj/article/view/150.