Parous women have higher chance of developing estrogen receptor-negative breast cance

[News]

Women who have had children (parous women) appear to have an increased risk of developing estrogen receptor-negative breast cancer, the subtype that carries a higher mortality rate and is more common in women of African ancestry.

More... (http://www.news-medical.net/news/20140917/Parous-women-have-higher-chance-of-developing-estrogen-receptor-negative-breast-cancer.aspx)