@article{Ball2014,
author = {Ball, S.J. and Pereira, G. and Jacoby, P. and De Klerk, N. and Stanley, F.J.},
title= {Re-evaluation of link between interpregnancy interval and adverse birth outcomes: Retrospective cohort study matching two intervals per mother},
year = {2014},
doi = {10.1136/bmj.g4333},
volume = {349},
pages = {g4333},
}