Catechol-O-methyltransferase ( COMT ) gene variants : possible association of the Val158Met variant with opiate addiction in Hispanic women .
B-GeneOrGeneProduct O B-GeneOrGeneProduct O O O O O O O O B-SequenceVariant O O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O O B-OrganismTaxon O