Estimating the burden of disease attributable to ambient air pollution (ambient PM2.5 and ambient ozone) in South Africa for 2000, 2006 and 2012 oleh R A Roomaney, E Cairncross, M Tesfaye, T Kapwata, N Abdelatif, C Olivier, K Mathibela, A Cois, I Neethling, J Botai, E B Turawa, O F Awotiwon, K Chetty, B Nojilana, C Y Wright, R Pacella, D Bradshaw, V Pillay-van Wyk