@article{delatorre_mir_gräf_bello_2020,  title={Tracking the onset date of the community spread of SARS-CoV-2 in western countries},  volume={115},  ISSN={0074-0276},  url={https://doi.org/10.1590/0074-02760200183},  DOI={10.1590/0074-02760200183},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Delatorre, Edson and Mir, Daiana and Gräf, Tiago and Bello, Gonzalo},  year={2020},  pages={e200183} }