@article{Magnusson2012,
author = {Magnusson, B.M. and Masho, S.W. and Lapane, K.L.},
title= {Early age at first intercourse and subsequent gaps in contraceptive use},
year = {2012},
doi = {10.1089/jwh.2011.2893},
volume = {21},
number = {1},
pages = {73--79},
}