Journal Article
                        
                        Peltzer, Karl, Sandra  Hewlett, Alfred E Yawson, Paula  Moynihan, Raman  Preet, Fan  Wu, Godfrey  Guo, Perianayagam  Arokiasamy, James J Snodgrass, Somnath  Chatterji, Mark E Engelstad, and Paul  Kowal.  
"Prevalence of Loss of All Teeth (Edentulism) and Associated Factors in Older Adults in China, Ghana, India, Mexico, Russia and South Africa." International Journal of Environmental Research and Public Health 11, no. 11 (2014): 11308-11324.