@article{Uthman2008,
author = {Uthman, O.A.},
title= {Geographical variations and contextual effects on age of initiation of sexual intercourse among women in Nigeria: A multilevel and spatial analysis},
year = {2008},
doi = {10.1186/1476-072X-7-27},
journal = {International Journal of Health Geographics},
volume = {7},
number = {27},
}