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319 bytes added, 02:36, 5 October 2021
Early twentieth century: Add Wolbarst 1926.
|pages=38-47
|accessdate=2021-10-04
}}</ref>
 
Wolbarst (1926) makes his claim for the first time that male circumcision prevents penile cancer.<ref name="wolbarst1926!>{{REFjournal
|last=Wolbarst
|first=Abraham L.
|init=AL
|title=Is circumcision a prophylactic against penis cancer?
|journal=Cancer
|date=1926-07
|volume=3
|issue=4
|pages=301-10
}}</ref>
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