Asian Journal ofAndrology (AJA) wishes to inform its readers of the following incident of duplicate publication.
The article Molecular mechanism of epididymal protease inhibitor modulating the liquefaction of human semen [1]by Wang Z J, Zhang W, Feng NH, Song NH, Wu HF and Sui YG, published in the Sep 2008 issue of AJA containssubstantial data from the two original articles by Wang ZJ et al.