@article{quigley_thompson_1998,  title={The effects of surgery on gastrointestinal motor activity},  volume={31},  ISSN={0100-879X},  url={https://doi.org/10.1590/S0100-879X1998000700003},  DOI={10.1590/S0100-879X1998000700003},  number={7},  journal={Brazilian Journal of Medical and Biological Research},  publisher={Associação Brasileira de Divulgação Científica},  author={Quigley, .M.M. and Thompson, J.S.},  year={1998},  month={Jul},  pages={889–900} }