Individual differences in acute pain-induced endogenous analgesia predict time to resolution of postoperative pain in the rat.
Peters CM, Hayashida K, Suto T, Houle TT, Aschenbrenner CA, Martin TJ, Eisenach JC. Individual differences in acute pain-induced endogenous analgesia predict time to resolution of postoperative pain in the rat. Anesthesiology. 2015 Apr; 122(4):895-907.