Journal Article
                        
                        Joubert, Jane, Rosana  Norman, Estelle V Lambert, Pam  Groenewald, Michelle  Schneider, Fiona  Bull, Debbie  Bradshaw, and South African Comparitive Risk Assessment  Collaboration.  
"Estimating the burden of disease attributable to physical inactivity in South Africa in 2000." South African Medical Journal 97, no. 8 (2007): 725-731.