@article{Cleland00,
author = {Cleland, J. and Conde-Agudelo, A. and Peterson, H. and Ross, J. and Tsui, A.O.},
title= {Contraception and health},
doi = {10.1016/S0140-6736(12)60609-6},
journal = {The Lancet},
volume = {380},
number = {9837},
pages = {149--156},
}