@article{Hansen2009,
author = {Hansen, M.-L.H. and Mølgaard-Nielsen, D. and Knudsen, L.B. and Keiding, N.},
title= {Rates of induced abortion in Denmark according to age, previous births and previous abortions},
year = {2009},
doi = {10.4054/DemRes.2009.21.22},
journal = {Demographic Research},
volume = {21},
number = {22},
pages = {647--680},
}