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[[Abraham L. Wolbarst|Wolbarst]] (1932) put forward his claim again that [[circumcision]] would prevent [[penile cancer]] in the British journal, ''The Lancet''.<ref name="Wolbarst 1932">{{REFjournal |last=Wolbarst |init=AL |author-link=Abraham L. Wolbarst |title=Circumcision and penile cancer |journal=Lancet |volume=1 |issue=5655 |date=1932-01-16 |pages=150-3Wolbarst1932}}</ref> In those long ago days, the true causes of cancer were unknown so it was impossible to disprove Wolbarst's falsehoods.
Laumann et al., writing in 1997, reported an incidence of circumcision of 31 percent in 1933.<ref name="laumann1997">{{REFjournal