Candrilli SD, Davis KL, Iyer S. Impact of constipation on opioid use patterns, health care resource utilization, and costs in cancer patients on opioid therapy. J Pain Palliat Care Pharmacother. 2009 Sep 1;23(3):231-41.
Miron A, Schildkraut JM, Rimer BK, Winer EP, Sugg Skinner C, Futreal PA, Culler D, Calingaert B, Clark S, Kelly Marcom P, Iglehart JD. Testing for hereditary breast and ovarian cancer in the Southeastern United States. Ann Surg. 2000 May;231(5):624-34.