1. Sierakowski R, Finlayson B, Landes RR, Finlayson CD, Sierakowski N (1978) The frequency of urolithiasis in hospital discharge diagnoses in the United States. Invest Urol 15:438–441
2. Menon M, Parulkar BG, Drach GW (1998) Campbell’s urology, 7th edn. W. B. Saunders Co., London
3. Clark JY, Thompson IM, Optenberg SA (1995) Economic impact of urolithiasis in the United States. J Urol 154:2020–2024
4. Robertson WG (2001) The changing pattern of urolithiasis in the UK and its causes. In: Kok DJ, Romijn HC, Verhagen PCMS, Verkoelen CF (eds) Eurolithiasis, Maastricht. Shaker Publishing, The Netherlands, pp 9–11
5. Coe FL, Parks JH, Asplin JR (1992) The pathogenesis and treatment of kidney stones. New Engl J Med 327:1141