Published in 2000 and drawing on community-based epidemiological studies, the World Health Organization's Consortium in Psychiatric Epidemiology estimated the rates of the lifetime prevalence of mental disorders among adults to range between 12.2% and 48.6% worldwide (WHO, 2000). Thereafter, in 2001, the WHO estimated that approximately 450 million individuals worldwide have suffered from neuropsychiatric disorders in their lifetime (WHO, 2001). More recently, the WHO's 2011 World Report on Disability estimated that of the 1 billion people worldwide afflicted with a disabling condition, the causes for 60% of those affected (approximately 600 million people, or ~10% of the world's population) can be linked to mental health issues, neurological conditions, and substance abuse problems (WHO, 2011a). These reports highlighted the significant contribution of mental health issues to the global socioeconomic burden of diseases, and urged for a scaling up of mental services worldwide with a focus on countries suffering from treatment gaps in mental health care.