@article{almeida_chehter_2020,  title={COVID-19 and the gastrointestinal tract: what do we already know?},  volume={18},  ISSN={1679-4508},  url={https://doi.org/10.31744/einstein_journal/2020RW5909},  DOI={10.31744/einstein_journal/2020RW5909},  journal={einstein (São Paulo)},  publisher={Instituto Israelita de Ensino e Pesquisa Albert Einstein},  author={Almeida, Joana Ferro Machado de and Chehter, Ethel Zimberg},  year={2020},  pages={eRW5909} }