1. http://210.69.214.131:/webdata/AttachFiles/Attach_8327_2_94_css.pdf
2. http://210.69.214.131:/webdata/AttachFiles/Attach_2493_1_2-2-4.pdf
3. Ho SZ, Kuo HC (2002) Pathogenesis and epidemiology of urolithiasis. Tzu Chin Med J 14:337–346
4. Menon M, Resnick MI (2002) Urinary lithiasis: etiology, diagnosis, and medical management. In: Walsh PC, Retik AB, Vaughan ED Jr., Wein AJ (eds) Campbell’s urology. 8th ed. WB Saunders, Philadelphia
5. Lee YH, Huang WC, Tsai JY (2002) Epidemiological studies on the prevalence of upper urinary calculi in Taiwan. Urol Int 68:172–177