It s a completely voluntary and confidential program where members prescribed these medications can be tested genetically to determine, in the case of tamoxifen, whether it will be metabolized by the body to treat breast cancer, or in the case of warfarin, to determine proper dosage, said Marianne McManus, director of health benefits strategy and design at IBM <a href=
http://accutane.buzz>dose of accutane</a> Metab 4 15 2012; 302 8 E992 E999