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.. (2003). Health and Addictions Salud Y Drogas, 3(1). https://doi.org/10.21134/haaj.v3i1.150