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Previous Volume 357:825-827 August 23, 2007 Number 8 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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To the Editor: Pettersson and colleagues (May 3 issue)¹ report that treatment for undescended testis before puberty as compared with treatment after puberty halves the risk of testicular cancer associated with undescended testicles. In a Danish cohort study, which had an almost identical design and included twice the number of cases of testicular cancer, we found no such difference.

We based our cohort on a national hospital-discharge register and cancer register, as did Pettersson et al., and we used the same inclusion criteria. We used a similar statistical approach — that is, men in whom cryptorchidism was diagnosed and who . . . [Full Text of this Article]

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• Akre, O., Richiardi, L. (2009). Does a testicular dysgenesis syndrome exist?. Hum Reprod 24: 2053-2060 [Abstract] [Full Text]