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}}</ref> This study tested for HPV at three sites: the [[scrotal skin|scrotum]]/shaft [[shaft skin]], the glans, and in [[urine]] samples. The authors of this study found that in circumcised men, the [[scrotal skin|scrotum]]/shaft [[shaft skin]] contained was most often the site of HPV infection. The authors also note that many large-scale studies fail to test for HPV on [[scrotal skin|scrotum]]/shaft [[shaft skin]].