1. Hypospadias trends in two US surveillance systems;Paulozzi;Pediatrics,1997
2. International trends in rates of hypospadias and cryptorchidism;Paulozzi;Environ Health Perspect,1999
3. Hypospadias: Anatomy, etiology, and technique;Baskin;J Pediatr Surg,2006
4. History of external genital surgery;Rogers,1973
5. Hypospadias Monograph;Van der Meulen,1964