http://kidney.niddk.nih.gov/kudiseases/pubs/stones_ez/
National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health
This easy-to-read consumer health information document provides basic need-to-know information about kidney stones. The publication describes the function of the kidney, how stones develop in the kidney, the symptoms associated with kidney stones, and how to prevent a recurrence of the disorder.