| | | | |
| web | Ariana Eunjung Cha | Washington Post | 2016-05-03 |
| | | | |
| | | | |
| web | | ScienceDaily | 2019-04-14 |
| web | Maggie Fox | NBC News | 2017-02-24 |
| web | | Wikipedia | 2016-01-18 |
| web | Gilbert K, Stafford C | Am J Infect Control | 2010-03-02 |
| web | Michael Kahn | Reuters | 2008-06-03 |
| web | Klevens RM, Edwards JR | Public Health Rep | 2007-03-01 |
| | | | |
| web | Denis Campbell | The Guardian | 2013-06-26 |
| web | Janet M Wojcicki | Acta Paediatr | 2013-06-01 |
| web | Sahud HB, Binns HJ | Pediatrics | 2006-12-01 |
| web | Laurie Barclay, MD | Medscape | 2006-09-06 |
| web | Lenard I. Lesser, MD | Journal of the American Board ... | 2006-09-01 |
| | | | |
| web | | New York Times | 2023-11-13 |
| web | European Lung Foundation | EurekAlert! | 2017-09-10 |
| web | Maggie Fox | Reuters | 2007-12-10 |
| web | Saul N Weingart, Ross McL Wils... | West J Med | 2000-06-01 |
| web | Lazarou J, Pomeranz BH | JAMA | 1998-04-15 |