Journal Article
Alberts, Marianne, Peter Urdal, Krisela Steyn, Inger Stensvold, Aage Tverdal, Johanna Nel, and Nelia P Steyn.
"Prevalence of cardiovascular diseases and associated risk factors in a rural black population of South Africa." European Journal of Cardiovascular Prevention & Rehabilitation 12, no. 4 (2005): 347-354.