Influence of <i>CYP2D6</i> Deletion, Multiplication, <i>–1584C</i>→<i>G</i>, <i>31G</i>→<i>A</i> and <i>2988G</i>→<i>A</i> Gene Polymorphisms on Dextromethorphan Metabolism among Mexican Tepehuanos and Mestizos | Publicación