«Circumcision» (på engelsk). Center for Disease Control and Prevention (CDC). 22. august 2013. Arkivert fra originalen 21. mai 2024. Besøkt 21. mai 2024.
«Circumcision». www.childrenshospital.org. Boston Children's Hospital. Besøkt 21. mai 2024. «Circumcision is a surgical procedure to remove the skin covering the end of the penis, called the foreskin. In many cultures, circumcision is a religious rite or a ceremonial tradition. It is most common in Jewish and Islamic faiths. In the United States, newborn circumcision is an elective procedure. The National Center for Health Statistics estimates that about 64 percent of newborn boys undergo circumcision. However, this number varies among socioeconomic, ethnic, and geographic groups.»
«Circumcision» (på engelsk). Center for Disease Control and Prevention (CDC). 22. august 2013. Arkivert fra originalen 21. mai 2024. Besøkt 21. mai 2024.