Are Antidepressant Drugs That Combine Serotonergic and Noradrenergic Mechanisms of Action More Effective Than the Selective Serotonin Reuptake Inhibitors in Treating Major Depressive Disorder? A Meta-analysis of Studies of Newer AgentsGeorge I. Papakostas, Richard C. Shelton, J. Craig Nelson et al.|Biological Psychiatry|2007Cited by 302