19Corsi, Daniel, Melissa Neuman, Jocelyn Finlay, and S V Subramanian. "Demographic and health surveys: a profile."International journal of epidemiology 41, no. 6 (2012): 1602-1613.
21de Neubourg, Chris, Jingqing Chai, Marlous de Milliano, Ilze Plavgo, and Ziru Wei. "Cross-Country MODA Study."(2012) Office of Research Working Papers.