@article{Blackstone2017,
author = {Blackstone, S.R. and Nwaozuru, U. and Iwelunmor, J.},
title= {Factors influencing contraceptive use in sub-Saharan Africa: A systematic review},
year = {2017},
doi = {10.1177/0272684X16685254},
volume = {37},
number = {2},
pages = {79--91},
}