Journal Article
                        
                        Kowal, Paul, Somnath  Chatterji, Nirmala  Naidoo, Richard  Biritwum, Wu  Fan, Ruy L Ridaura, Tamara  Maximova, Perianayagam  Arokiasamy, Nancy  Phaswana-Mafuya, Sharon  Williams, Josh J Snodgrass, Nadia  Minicuci, Catherine  D'Este, Karl  Peltzer, and Ties J Boerma.  
"Data Resource Profile: The World Health Organization Study on global AGEing and adult health (SAGE)." International Journal of Epidemiology 41, no. 6 (2012): 1639-1649.