A type of wave that can be used to clear a blockage from small tubes in the kidney is a the shock wave. Shock wave treatments are used to break up the stones and make it into fragments. These fragments are more easy to remove that the large ones.
Respiratory system I think. I MAY BE WRONG.
Hope I helped!
In 2006, the average American spent $3,372 on health care.
The answer to the blank in the above statement is 30%.
