Notice 189Urology Journal Vol 4 No 3 Summer 2007 Notice of Inadvertent Duplicate Publication Urol J. 2007;4:189. www.uj.unrc.ir The Urology Journal wishes to draw attention to a paper by Nikoobakht and colleagues, “The Relationship Between Lipid Profile and Erectile Dysfunction,” which was published in volume 2, number 1 (winter 2005) of the journal, that is similar to an article by the same authors and same title, published in the International Journal of Impotence Research 2005;17:523-6. This inadvertent duplicate publication has occurred as a result of misinterpretation of local journals and a different group of readers; in 2005, our journal was not being indexed in the international indexing systems and used to be considered as a local publication. Moreover, many authors were not familiar with the regulations of acceptable secondary publication. In this case, the corresponding author was contacted and it was confirmed that this is a case of inadvertent duplicate publication and the mistake was a result of a misunderstanding of the regulations by authors.