Robert C. Keefer earned a PhD is in biochemistry from the University of Nebraska Medical School and has worked for over thirty years in the international medical device, pharmaceutical and diagnost...ver maisRobert C. Keefer earned a PhD is in biochemistry from the University of Nebraska Medical School and has worked for over thirty years in the international medical device, pharmaceutical and diagnostics industries acquiring FDA product clearances and approvals, marketing and business development.ver menos