Pérez-López F, Urcia M A
Rev Esp Oncol. 1983;30(2):225-9.
The incidence of claimed risk factors for breast cancer was studied in 162 patients suffering this entity and in a control group of women with similar sociocultural level and age. Late menopause and sterility or first child born after age of 30 were the only factors more frequent in breast cancer patients.
对162例乳腺癌患者以及社会文化水平和年龄相近的女性对照组,研究了所声称的乳腺癌风险因素的发生率。绝经晚、不育或30岁后生育第一胎是仅在乳腺癌患者中更常见的因素。