@article{Cooper1998,
author = {Cooper, Glinda S. and Sandler, Dale P.},
title= {Age at Natural Menopause and Mortality},
year = {1998},
doi = {10.1016/S1047-2797(97)00207-X},
journal = {Annals of Epidemiology},
volume = {8},
number = {4},
pages = {229--235},
}