The South African Stress and Health (SASH) study: 12-month and lifetime prevalence of common mental disorders.

Heeringa, Steven G; Williams, David R.; Herman, Allen A; Stein, Dan J; Seedat, Soraya; Moomal, Hashim. (2009). The South African Stress and Health (SASH) study: 12-month and lifetime prevalence of common mental disorders.. South African Medical Journal. 99(5.2), 339-344.