J Pharmacol Exp Ther 2013 Dec 12;347(3):765-72. Epub 2013 Sep 12.
Center for Neuroscience and Pain Research, Department of Anesthesiology and Perioperative Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, Texas (S.-R.C., H.-Y.Z., H.S.B., H.-L.P.); Graduate Program in Neuroscience, The University of Texas Graduate School of Biomedical Sciences, Houston, Texas (H.-L.P.).