I am DongHoon Koh, M.D. from Seoul, Republic of Korea. I graduated from Konyang univeristy, college of medicine, Daejeon, Korea. After that I trained intern and resident in Konyang university hosiptal. I worked in Pohang Naval hosiptal as military doctor. I work in Department of Urology, Severance Hospital,Yonsei University College of Medicine as Clinical Research Assistant Professor(Fellowship).I interested in urologic cancer, robot surgery and minimal invasive surgery.