@article{mahmood_ahmed_fida_kamal_fatima_2018,  title={Concepts, protocol, variations and current trends in surgery first orthognathic approach: a literature review},  volume={23},  ISSN={2176-9451},  url={https://doi.org/10.1590/2177-6709.23.3.36.e1-6.onl},  DOI={10.1590/2177-6709.23.3.36.e1-6.onl},  number={3},  journal={Dental Press Journal of Orthodontics},  publisher={Dental Press International},  author={Mahmood, Hafiz Taha and Ahmed, Maheen and Fida, Mubassar and Kamal, Adeel Tahir and Fatima, Farheen},  year={2018},  month={May},  pages={36.e1–36.e6} }