Tài liệu tham khảo WikiPedia: Giọt_nước_nhỏ_hô_hấp //pubmed.ncbi.nlm.nih.gov/23771256 //doi.org/10.4415%2FANN_13_02_03 //www.worldcat.org/issn/0021-2571 https://www.nhmrc.gov.au/file/9771/download?token=... https://eportal.mountsinai.ca/Microbiology/faq/tra... https://www.who.int/news-room/detail/23-03-2020-pa... https://web.archive.org/web/20150405034015/http://... https://www.scielosp.org/article/aiss/2013.v49n2/1...
