@article{Steele2003,
author = {Steele, F. and Curtis, S.L.},
title= {Appropriate methods for analyzing the effect of method choice on contraceptive discontinuation},
year = {2003},
doi = {10.1353/dem.2003.0009},
journal = {Demography},
volume = {40},
number = {1},
pages = {1--22},
}