@techreport{Johnson2009,
author = {Johnson, K. and Grant, M. and Khan, S. and Moore, Z. and Armstrong, A. and Sa, Z.},
title= {Fieldwork-related factors and data quality in the demographic and health surveys program},
year = {2009},
publisher = {ICF Macro, Measure DHS},
address = {Calverton},
institution = {DHS Analytical Studies No. 19},
}