@article{lipp_edwards_2012,  title={Disposable surgical face masks for preventing surgical wound infection in clean surgery},  volume={130},  ISSN={1516-3180},  url={https://doi.org/10.1590/S1516-31802012000400014},  DOI={10.1590/S1516-31802012000400014},  number={4},  journal={Sao Paulo Medical Journal},  publisher={Associação Paulista de Medicina - APM},  author={Lipp, Allyson and Edwards, Peggy},  year={2012},  pages={269–269} }