http://www.thewholenetwork.org/14/post/2011/08/does-circumcision-cause-erectile-dysfunction.html
Acquisition of Erectile Dysfunction from Circumcision
http://intactnews.org/node/138/1319461990/acquisition-erectile-dysfunction-circumcision
Does circumcision cause erectile dysfunction (ED)?
http://www.torontosun.com/life/healthandfitness/2010/03/18/13277631.html
Is circumcision the reason we need Viagra?
http://www.canadafreepress.com/medical/urology030302.htm
Erectile Dysfunction Evaluation after Circumcision
http://www.ncbi.nlm.nih.gov/pubmed/14979200
What is keratinization? (graphic)
http://www.noharmm.org/IDcirc.htm#keratinization
Foreskin, Circumcision & Sexuality
http://www.circumstitions.com/Sexuality.html
A change in how intercourse works
http://www.drmomma.org/2009/10/change-in-how-intercourse-works.html
Book: Sex As Nature Intended It
http://astore.amazon.com/savingpenises-20/detail/0970044216
Book: The Rise of Viagra
http://astore.amazon.com/peacefparent-20/detail/081475211X
Book: The Joy of Uncircumcising
http://astore.amazon.com/savingpenises-20/detail/093406122X
How Male Circumcision May Be Affecting Your Love Life
http://www.coloradonocirc.org/pamphlets.php
Sexual side effects
http://www.boystoo.com/medical/conversion.htm
http://www.norm.org/lost.html
http://www.notjustskin.org/
From the Journal of Urology
http://www.cirp.org/library/sex_function/fink1/
Fine-touch pressure thresholds in the adult penis
http://www.nocirc.org/touch-test/bju_6685.pdf