%0 Journal Article %T Polymorphism of ¦Ì-Opioid Receptor Gene (OPRM1:c.118A>G) Might Not Protect against or Enhance Morphine-Induced Nausea or Vomiting %A Li-Kuei Chen %A Shiou-Sheng Chen %A Chi-Hsiang Huang %A Hong-Jyh Yang %J Pain Research and Treatment %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/259306 %U http://dx.doi.org/10.1155/2013/259306