Tài liệu tham khảo WikiPedia: Bìu_dái http://www.unifr.ch/ifaa/Public/EntryPage/TA98%20T... http://xiphoid.biostr.washington.edu/fma/fmabrowse... https://meshb.nlm.nih.gov/record/ui?ui=D012611 https://commons.wikimedia.org/wiki/Category:Scrotu...