Am Fam Physician. 2003;68(7):1266
The article “Evaluation of the Subfertile Man” (May 15, 2003, page 2165) contained an error regarding the size of a normal testis. On page 2167, in the second column, second line, the size of a normal testis should be 20 cm3 or more, or at least 4 cm in greatest dimension. The online version of this article has been corrected.