@article{masood_kayani_2011,  title={Mutational analysis of xenobiotic metabolizing genes (CYP1A1 and GSTP1) in sporadic head and neck cancer patients},  volume={34},  ISSN={1415-4757},  url={https://doi.org/10.1590/S1415-47572011005000034},  DOI={10.1590/S1415-47572011005000034},  number={4},  journal={Genetics and Molecular Biology},  publisher={Sociedade Brasileira de Genética},  author={Masood, Nosheen and Kayani, Mahmood Akhtar},  year={2011},  pages={533–538} }