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UNAIDS/WHO/SACEMA Expert Group on Modelling the Impact and Cost of Male Circumcision for HIV Prevention.UNAIDS/WHO/SACEMA Expert Group on Modelling the Impact and Cost of Male Circumcision for HIV Prevention.PLoS Med. 2009 Sep;6(9):e1000109. doi: 10.1371/journal.pmed.1000109. Epub 2009 Sep 8.PLoS Med. 2009.PMID: 19901974Free PMC article.Review.