2Abou-Saleh MT, Ghubash R, Daradkeh TK. A1 Ain community psychiatric survey I: prevalence and socio-demographic correlates. Soc Psychiatry Psychiatr Epidemiol, 2001, 36: 20-28.
3Kringlen E, Torgersen S, Cramer V. A Norwegian psychiatric epidemiological study. Am J Psychiatry, 2001, 158: 1091-1098.
4Wittchen Hu, Nelson CB, Lackner G. Prevalence of mental disorders and psychosocial impairments in adolescents and young adults. Psychol Med, 1998, 28: 109-126.