1. Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
2. Department of Internal Medicine and Division of Brain Korea 21 Project for Biomedical Science, Seoul, Korea.
3. Genomic Research Center for Lung and Breast/Ovarian Cancers, Korea University Anam Hospital, Seoul, Korea.
4. DNA Link Inc., Seoul, Korea.
5. Department of Internal Medicine, Inha University College of Medicine, Incheon, Korea.