McElroy LM, Daud A, Davis AE, Lapin B, Baker T, Abecassis MM, Levitsky J, Holl JL, Ladner DP. A meta-analysis of complications following deceased donor liver transplant. Am J Surg. 2014 Oct;208(4):605-18. doi: 10.1016/j.amjsurg.2014.06.006
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.