| Name | Info | Provider | Link |
|---|---|---|---|
| subscription/membership/fee required | Elsevier Science | https://linkinghub.elsevier.com/retrieve/pii/S1743-6095(15)33518-9 | |
| Erectile Dysfunction | free resource | MedlinePlus Health Information | https://medlineplus.gov/erectiledysfunction.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=21521485.ui | |
| subscription/membership/fee required | Wiley | https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=&date=2011&volume=8&issue=5&spage=1296 | |
| subscription/membership/fee required | Silverchair Information Systems | https://academic.oup.com/jsm/article-lookup/doi/10.1111/j.1743-6109.2011.02272.x |