Gallicchio L, McSorley MA, Newschaffer CJ, Thuita LW, Huang HY, Hoffman SC, Helzlsouer KJ. Nonsteroidal antiinflammatory drugs, cyclooxygenase polymorphisms, and the risk of developing breast carcinoma among women with benign breast disease. Cancer. 2006 Apr 01;106(7):1443–52. doi: 10.1002/cncr.21763. PMID: 16502408.