Name Info Provider Link
subscription/membership/fee required Ingenta plc https://www.ingentaconnect.com/openurl?genre=article&issn=&volume=67&issue=1&spage=233&aulast=Hunter
Sexual Health free resource MedlinePlus Health Information https://medlineplus.gov/sexualhealth.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=38173321.ui
subscription/membership/fee required Wolters Kluwer https://dx.doi.org/10.1097/GRF.0000000000000830