Statement of retraction.
Due to an oversight on our part, the following article appeared, in error, in Critical Reviews in Microbiology 2008, 34: 163-173 Pneumococcal Surface Adhesin A (PsaA): A Review Gowrisankar Rajam, Julie M. Anderton, George M. Carlone, Jacquelyn S. Sampson, and Edwin W. Ades The version of scientific record of this paper is as follows: Critical Reviews in Microbiology 2008, 34: 131-142 Pneumococcal Surface Adhesin A (PsaA): A Review Gowrisankar Rajam, Julie M. Anderton, George M. Carlone, Jacquelyn S. Sampson, and Edwin W. Ades The publishers would like to apologise to the authors, editor, and readers for this error.