| Name | Info | Provider | Link |
|---|---|---|---|
| Klinefelter Syndrome | free resource | MedlinePlus Health Information | https://medlineplus.gov/klinefeltersyndrome.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=21429009.ui | |
| free resource | PubMed Central | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21429009/ | |
| free resource | Europe PubMed Central | https://europepmc.org/abstract/MED/21429009 | |
| subscription/membership/fee required | Wiley | https://doi.org/10.1111/j.1651-2227.2011.02280.x |