@article{santos_santos_santos_malbouisson_carmona_2009,  title={Intrathecal morphine plus general anesthesia in cardiac surgery: effects on pulmonary function, postoperative analgesia, and plasma morphine concentration},  volume={64},  ISSN={1807-5932},  url={https://doi.org/10.1590/S1807-59322009000400003},  DOI={10.1590/S1807-59322009000400003},  number={4},  journal={Clinics},  publisher={Faculdade de Medicina / USP},  author={Santos, Luciana Moraes dos and Santos, Verônica Cavani Jorge and Santos, Silvia Regina Cavani Jorge and Malbouisson, Luiz Marcelo Sá and Carmona, Maria José Carvalho},  year={2009},  month={Apr},  pages={279–285} }