@article{e1446c0a5da141c283bd73838230cecf,
title = "Age at first childbirth and oral contraceptive use are associated with risk of androgen receptor-negative breast cancer: the Malm{\"o} Diet and Cancer Cohort.",
abstract = "Risk factors for breast cancer vary according to breast cancer subtype. This study analyzes the impact of potential risk factors in breast cancer by androgen receptor (AR) status.",
author = "Karin Elebro and Salma Butt and Mozhgan Dorkhan and Helena Jernstr{\"o}m and Signe Borgquist",
year = "2014",
doi = "10.1007/s10552-014-0394-2",
language = "English",
volume = "25",
pages = "945--957",
journal = "Cancer Causes and Control",
issn = "1573-7225",
publisher = "Springer",
number = "8",
}