@article{gupta_2004,  title={Radiofrequency fistulotomy: a better alternative for treating low anal fistula},  volume={122},  ISSN={1516-3180},  url={https://doi.org/10.1590/S1516-31802004000400008},  DOI={10.1590/S1516-31802004000400008},  number={4},  journal={Sao Paulo Medical Journal},  publisher={Associação Paulista de Medicina - APM},  author={Gupta, Pravin Jaiprakash},  year={2004},  pages={172–174} }