@article{cai_zhang_tang_gan_2021,  title={Comment on “Current evidence of SARS-CoV-2 vertical transmission: an integrative review”},  volume={67},  ISSN={0104-4230},  url={https://doi.org/10.1590/1806-9282.67.Suppl1.20200844},  DOI={10.1590/1806-9282.67.Suppl1.20200844},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  author={Cai, Jianghui and Zhang, Hongxi and Tang, Mi and Gan, Xiaoqin},  year={2021},  pages={170–171} }