@article{Bergh1999,
author = {Bergh, T. and Ericson, A. and Hillensjö, T. and Nygren, K.G. and Wennerholm, U.B.},
title= {Deliveries and children born after in-vitro fertilisation in Sweden 1982–95: A retrospective cohort study},
year = {1999},
doi = {10.1016/S0140-6736(99)04345-7},
journal = {The Lancet},
volume = {354},
number = {9190},
pages = {1579−1585},
}