Drug release properties of poly(vinyl pyrrolidone)/acrylic acid copolymer hydrogels

The following article from the Journal of Applied Polymer Science, “Drug release properties of poly(vinyl pyrrolidone)/acrylic acid copolymer hydrogels,” by Abdullah S. Alarifi, published online on 14 February 2011 in Wiley Online Library (wileyonlinelibrary.com), and in Volume 120, pp. 3484–3489, has been retracted by agreement between the journal's editors and Wiley Periodicals, Inc. The retraction has been agreed because of unacknowledged overlap with work previously published in the Arab Journal of Nuclear Sciences and Applications (2010, 43, 366), as well as in Proceeding, 2nd International Conference on Radiation Sciences and Applications (Egyptian Society of Radiation Sciences and Applications: Marsa Alam, Egypt, 2010; p 362).