@article{Magnus2019,
author = {Magnus, M.C. and Wilcox, A.J. and Morken, N.H. and Weinberg, C.R. and Håberg, S.E.},
title= {Role of maternal age and pregnancy history in risk of miscarriage: Prospective register based study},
year = {2019},
doi = {10.1136/bmj.l869},
volume = {364},
pages = {869},
}