World Health Organisation (www.who.int)
World Hypertension League (www.mco.edu/org/whl)
British Hypertension Society (www.bhsoc.org)
Dabl Educational Trust (www.dableducational.com)
European Society of Hypertension (www.eshonline.org)
Tommy's - The Baby Charity (www.tommys.org)
National Heart, Lung and Blood Institute (www.nhlbi.nih.gov)
Swiss Society of Hypertension (www.swisshypertension.ch)
Blood Pressure Association UK (www.bpassoc.org.uk)
Heart Center Online (www.heartcenteronline.com)