 In the 1980s, Dr. Samuel Mites created microvolume techniques for bloodwork and Dr. H. William Chatworthy pioneered pediatric surgeries by developing portosystemic shunt procedures.In the 1990s, Dr. Christopher Walker led a nationwide project on hepatitis C infection and immunobiology.In 2000, Dr. Robert Castile patented breakthrough technology, an "adult-type" infant pulmonary function testing device.