Rasooly, Mohammad Hafez, Khwaja Mir Islam Saeed, Bashir Noormal, Iqbal Aman, Fred Arnold, Pav Govindasamy, Shea Rutstein, and Rebecca Winter. 2013. The effect of birth intervals on causes of under-five mortality in Afghanistan. DHS Working Papers No. 96. Calverton, Maryland, USA: ICF International. Available at http://dhsprogram.com/pubs/pdf/WP96/WP96.pdf.