@article{sallum_padrão_szachnowicz_seguro_bianchi_ecconello_2015,  title={Prevalence of gallstones in 1,229 patients submitted to surgical laparoscopic treatment of GERD and esophageal achalasia: associated cholecystectomy was a safe procedure},  volume={28},  ISSN={0102-6720},  url={https://doi.org/10.1590/S0102-67202015000200007},  DOI={10.1590/S0102-67202015000200007},  number={2},  journal={ABCD. Arquivos Brasileiros de Cirurgia Digestiva (São Paulo)},  publisher={Colégio Brasileiro de Cirurgia Digestiva},  author={SALLUM, Rubens Antonio Aissar and PADRÃO, Eduardo Messias Hirano and SZACHNOWICZ, Sergio and SEGURO, Francisco C. B. C. and BIANCHI, Edno Tales and ECCONELLO, CIvan},  year={2015},  month={Apr},  pages={113–116} }