David has a Ph D in Microbiology and Immunology from Temple University Medical School. For more than thirty-five years he has been developing tests for human diseases, particularly infectious diseases. He has worked for multiple companies, large and small, in various positions and has developed extensive knowledge concerning the design, development and commercialization of in vitro diagnostic tests and instrumentation. David first arrived in Korea in April of 1978 as a Peace Corps volunteer. His Korean name is Im Dae-oon, which was given by his Korean teachers when he first came to Korea. In Korean, his family name, Im, means ‘Forest,’ and his given name, Dae-oon, means ‘big cloud.’ David was forced to resign from Peace Corps the very next day of the Gwangju Uprising. However, after he witnessed the Gwangju Uprising, it opened up to a new path and shaped him into who he is now.