Opie Lionel H
Hypertension Clinic, Department of Medicine, Groote Schuur Hospital and Hatter Institute, Cape Heart Centre, University of Cape Town Faculty of Health Sciences, Observatory, Cape Town, 7925, South Africa.
J Hypertens. 2008 Feb;26(2):161-3. doi: 10.1097/HJH.0b013e3282f300a7.