Psychiatric epidemiology: Selected recent advances and future directions.
Bulletin of the World Health Organization
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2560738/pdf/10885165.pdf
Traumatic events and post-traumatic stress disorder in the community: Prevalence, risk factors and comorbidity.
Acta Psychiatrica Scandinavica
http://onlinelibrary.wiley.com/doi/10.1034/j.1600-0447.2000.101001046.x/abstract
Cross-national comparisons of the prevalences and correlates of mental disorders.
Bulletin of the World Health Organization
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2560724/
The epidemiology of pure and comorbid generalized anxiety disorder: A review and evaluation of recent research.
Acta Psychiatrica Scandinavica
http://www.ncbi.nlm.nih.gov/pubmed/?term=The%20epidemiology%20of%20pure%20and%20comorbid%20generalized%20anxiety%20disorder%3A%20A%20review%20and%20evaluation%20of%20recent%20research.