@article{abdel-ghaffar_abdel-wahab_roushdy_osman_2019,  title={Preemptive nebulized ketamine for pain control after tonsillectomy in children: randomized controlled trial},  volume={69},  ISSN={0034-7094},  url={https://doi.org/10.1016/j.bjane.2019.04.005},  DOI={10.1016/j.bjane.2019.04.005},  number={4},  journal={Revista Brasileira de Anestesiologia},  publisher={Sociedade Brasileira de Anestesiologia},  author={Abdel-Ghaffar, Hala S. and Abdel-Wahab, Amani H. and Roushdy, Mohammed M. and Osman, Amira M.M.},  year={2019},  month={Jul},  pages={350–357} }