@article{hasan_2016,  title={Incidence of fistula after management of perianal abscess},  volume={36},  ISSN={2237-9363},  url={https://doi.org/10.1016/j.jcol.2016.05.002},  DOI={10.1016/j.jcol.2016.05.002},  number={4},  journal={Journal of Coloproctology (Rio de Janeiro)},  publisher={Sociedade Brasileira de Coloproctologia},  author={Hasan, Riyadh Mohamad},  year={2016},  month={Oct},  pages={216–219} }