Brazil, Mexico, USA: "Overall, our study found that circumcision status was not associated with incidence and clearance of genital HPV detection, except for among specific HPV types… the incidence of oncogenic HPV types 39 and 51 were significantly higher among CIRcumcised than UNCIRcumcised men." User LordVoldemort, in the Reddit Science subreddit, 15 Feb 2014