The Guernsey Trial. A prospective investigation of hormone patterns and subsequent breast cancer.
D001943:Breast Neoplasms / Q000209:etiology; D002603:Channel Islands; D004967:Estrogens; D008403:Mass Screening; D009729:Nursing; D011374:Progesterone; D011446:Prospective Studies
D004967:Estrogens; D011374:Progesterone