Hiroyuki Sasa, head of Olympus medical equipment marketing business and president-nominee, speaks at an unveiling ceremony of the company's new products in Tokyo March 21, 2012. Sasa said on Wednesday that the medical equipment and camera maker must continue to develop its core medical business in order to rebuild after being involved in one of Japan's worst corporate scandals.REUTERS/Kim Kyung-Hoon (JAPAN - Tags: SCIENCE TECHNOLOGY BUSINESS HEALTH)