@article{Little1998,
author = {Little, P. and Griffin, S. and Kelly, J. and Dickson, N. and Sadler, C.},
title= {Effect of educational leaflets and questions on knowledge of contraception in women taking the combined contraceptive pill: Randomised controlled trial},
year = {1998},
doi = {10.1136/bmj.316.7149.1948},
volume = {316},
number = {7149},
pages = {1948--1952},
}