By the time the device was perfected, Theo had healed to the point at which it was not necessary for him; however, several thousand other children around the world benefited from the WDT valve before medicine technology progressed beyond it.
By the time the device was perfected, Theo had healed to the point at which it was not necessary for him. Several thousand other children around the world benefited from the WDT valve. This was however. Medicine technology progressed beyond it.