Liver pathology, hepatocarcinogenesis, cancer stem cell, etc

1994 ~1994 Messachusettes General Hospital, research fellow
1994 ~1995 Mount Sinai Medical Center, research fellow
1996 ~ Assistant professor, Associate professor, Professor,
2003 ~2008 Editor, The Korean Liver Cancer Study Group
2008 ~2009 Treasurer, The Korean Society of Pathologists
2008 ~ Vice Dean of Research Affairs, Yonsei University College of Medicine
2009 ~ Hans Popper Hepatopathology Society, Educational committee chair
2009 ~2010 Chief of the Committe for General Rules and Guideline for the Study of Liver Cancer, The Korean Liver Cancer Study Group
2010 ~ PLoS ONE Academic editor

1987 Severance Award, Yonsei University
1999, 2000, 2007 Excellent Research Award, Yonsei University
2000 Excellent Research Award (Gegum Awards), The Korean Society of Pathologists
2002 The Best Research Awards, The Korean Association for the Study of the Liver
2006 The Best Research Award, The Korean Society of Pathologists
2010 Bowon Awards (The Best Research Awards), Yonsei University