Oestrogen fractions during early reproductive life in the aetiology of breast cancer.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D044466:Asian People; D001943:Breast Neoplasms / Q000453:epidemiology / Q000209:etiology*; D004967:Estrogens / Q000096:biosynthesis* / Q000378:metabolism / Q000652:urine; D005260:Female; D006801:Humans; D007564:Japan; D010053:Ovary / Q000378:metabolism*; D011247:Pregnancy; D012098:Reproduction; D014481:United States; D044465:White People
D004967:Estrogens