@techreport{Bradley2015,
author = {Bradley, S.E.K. and Winfrey, W. and Croft, T.N.},
title= {Contraceptive use and perinatal mortality in the DHS: an assessment of the quality and consistency of calendars and histories},
year = {2015},
URL = {http://dhsprogram.com/pubs/pdf/MR17/MR17.pdf},
institution = {DHS Methodological Reports 17},
}