Gravelle I H, Bulbrook R D, Wang D Y, Allen D, Hayward J L, Bulstrode J C, Takatani O
Department of Radiology, University Hospital of Wales, Cardiff, UK.
Breast Cancer Res Treat. 1991 May;18 Suppl 1:S93-5. doi: 10.1007/BF02633537.
Normal premenopausal Japanese women have significantly more favourable mammographic parenchymal patterns (Wolfe Grades) than comparable British women. This finding is unaffected when the women are stratified by age, Quetelet's Index, age at menarche, age at first birth, and parity.
绝经前的日本正常女性在乳房X光检查中显示出的实质模式（沃尔夫分级）比英国的同龄女性更为有利。当按年龄、体重指数、初潮年龄、首次生育年龄和产次对女性进行分层时，这一发现不受影响。
