 Peacock and the surgeons he subsequently trained went on to develop the procedure further using both their own clinical-intellectual refinements and refinements in medical equipment and technology that occurred from the 1980s through the 2000s (decade).Today, St. Louis Children's Hospital in St. Louis, Missouri has a "Center for Cerebral Palsy Spasticity" that is the only internationally known clinic in the world to have conducted concentrated first-hand clinical research on SDR over an extended period.Its chief neurosurgeon in the field, Doctor T.S.