@article{Kvåle1994,
author = {Kvåle, G. and Heuch, I. and Nillsen, 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},
}