1. WHO International Collaborative Study of Hypertensive Disorders of Pregnancy. Geographic variation in the incidence of hypertension in pregnancy;Am J Obstet Gynecol,1988
2. The Scottish Executive Health Department, The Department of Health, Social Services and Public Safety, Northern Ireland,2001
3. Eclampsia in the United Kingdom;Douglas;BMJ,1994
4. Eclampsia at Harare maternity hospital;Crowther;S Afr Med J,1985
5. Seasonal incidence of eclampsia, its relationship to meteorological data in Mozambique;Bergström;J Perinat Med,1992