• Circumcision changes penis bacteria ecosystem, may explain lower HIV and HPV risk http://www.huffingtonpost.com/2013/04/16/circumcision-penis-bacteria-hiv-risk_n_3091271.html?utm_hp_ref=fb&src=sp&comm_ref=false#sb=1409857,b=facebook 3283 comments 16/4/2013 science

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