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Nature Reviews Urology 2, 157 (1 April 2005) | doi:10.1038/ncpuro0161

Genital ambiguity and urogenital sinus anomalies: a new classification

Rink RC et al. (2005) A new classification for genital ambiguity and urogenital sinus anomalies. BJU Int 95: 638–642 Since the 1950s, pediatric urologists have used Prader's classification to describe cases of genital ambiguity, and have generally characterized urogenital sinus anomalies based on 'high' or 'low' urogenital confluence.