Monyeki, K. et al. 2009. Development and Tracking of Body Mass Index from Preschool Age into Adolescence in Rural South African Children: Ellisras Longitudinal Growth and Health Study. Journal of Health, Population and Nutrition. 26, 4 (Jan. 2009), 405–417. DOI:https://doi.org/10.3329/jhpn.v26i4.1882.