@article{polesello_queiroz_linhares_amaral_ono_2013,  title={Anatomical variation of piriformis muscle as a cause of deep gluteal pain: diagnosis using MR neurography and treatment},  volume={48},  ISSN={0102-3616},  url={https://doi.org/10.1016/j.rboe.2012.09.001},  DOI={10.1016/j.rboe.2012.09.001},  number={1},  journal={Revista Brasileira de Ortopedia},  publisher={Sociedade Brasileira de Ortopedia e Traumatologia},  author={Polesello, Giancarlo Cavalli and Queiroz, Marcelo Cavalheiro and Linhares, João Paulo Tavares and Amaral, Denise Tokechi and Ono, Nelson Keiske},  year={2013},  month={Feb},  pages={114–117} }