E. W. Kimani-Murage, C. Ndedda, K. Raleigh, and P. Masibo, “Vitamin A Supplementation and Stunting Levels Among Two Year Olds in Kenya: Evidence from the 2008-09 Kenya Demographic and Health Survey”, Int. J. Child Health Nutr., vol. 1, no. 2, pp. 135–147, Jan. 2013.