Zahari, Z.; Siong, L. C.; Yeh, L. Y.; Ibrahim, M. A.; Musa, N.; Yasin, M. A. M.; Choon, T. S.; Mohamad, N.; Ismail, R. 118A>G AND IVS2+691G>C POLYMORPHISMS OF OPRM1 GENE HAVE NO INFLUENCE ON COLD-PAIN SENSITIVITY AMONG HEALTHY OPIOID-NAIVE MALAY MALES. Int J Pharm Pharm Sci 2016, 8, 73-80.