1. Indische Plastik;Cohn,1922
2. Male infibulation;Dingwall,1925
3. Retrospective;Tom of Finland,1991
4. Noah N. Tattooing and piercing—the need for guidelines in EU. Euro Surveill 2006;11.1.4-4
5. Complications of ear piercing: treatment and prevention;Hendricks;Cutis,1991