Familial Aggregation of Cryptorchidism--A Nationwide Cohort Study

Abstract excerpt

Although cryptorchidism is the most common birth defect in boys affecting 4-9 percent of newborns and 1-2 percent of boys 1 year of age, the etiology remains largely unknown. The authors investigated the contribution of genetic and environmental factors to familial aggregation of cryptorchidism. Using Danish health registers, they identified 25,395 boys diagnosed with cryptorchidism in a cohort of 1,022,713 boys...

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