How to Obtain a Nasopharyngeal Swab Specimen. Marty, F. M., Chen, K., & Verrill, K. A. New England Journal of Medicine, 382(22):e76, May, 2020.
How to Obtain a Nasopharyngeal Swab Specimen [link]Paper  doi  bibtex   
@article{ingelfinger_how_2020,
	title = {How to {Obtain} a {Nasopharyngeal} {Swab} {Specimen}},
	volume = {382},
	issn = {0028-4793, 1533-4406},
	url = {http://www.nejm.org/doi/10.1056/NEJMvcm2010260},
	doi = {10.1056/NEJMvcm2010260},
	language = {en},
	number = {22},
	urldate = {2021-01-23},
	journal = {New England Journal of Medicine},
	author = {Marty, Francisco M. and Chen, Kaiwen and Verrill, Kelly A.},
	editor = {Ingelfinger, Julie R.},
	month = may,
	year = {2020},
	pages = {e76},
}

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