@article{astolfi_freschi_berti_gattas_molina_meller_2017,  title={Flexible ureterorenoscopy in position or fusion anomaly: Is it feasible?},  volume={63},  ISSN={0104-4230},  url={https://doi.org/10.1590/1806-9282.63.08.685},  DOI={10.1590/1806-9282.63.08.685},  number={8},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  author={Astolfi, Rafael Haddad and Freschi, Gustavo and Berti, Fernando Figueiredo and Gattas, Nelson and Molina, Wilson Rica and Meller, Alex},  year={2017},  month={Aug},  pages={685–688} }