@article{Kvåle1994,
author = {Kvåle, G. and Heuch, I. and Nilssen, S. },
title= {Parity in Relation to Mortality and Cancer Incidence: A Prospective Study of Norwegian Women},
year = {1994},
doi = {10.1093/ije/23.4.691},
journal = {International Journal of Epidemiology},
volume = {23},
number = {4},
pages = {691--699},
}