Changes

=== American bias ===

<blockquote>

Circumcision practices are largely culturally determined and as a result there are strong beliefs and opinions surrounding its practice. It is important to acknowledge that researchers' personal biases and the dominant circumcision practices of their respective countries may influence their interpretation of findings.<ref name="siegfried2003">Siegfried N, Muller M, Volmink J, Deeks J, Egger M, Low N, Weiss H, Walker S, Williamson P. [http://www.cirp.org/library/disease/HIV/cochrane2003/ Male circumcision for prevention of heterosexual acquisition of HIV in men] (Cochrane Review). In: ''The Cochrane Library'', Issue 3, 2003. Oxford: Update Software</ref>