| Name | Info | Provider | Link |
|---|---|---|---|
| Germs and Hygiene | free resource | MedlinePlus Health Information | https://medlineplus.gov/germsandhygiene.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=25901515.ui | |
| subscription/membership/fee required | Cambridge University Press | https://www.cambridge.org/core/product/identifier/S0899823X15000951/type/journal_article |