1. Department of Stem Cell Biology; School of Medicine; Konkuk University; Seoul 143-701 Korea
2. Center for Stem Cell Research; Institute of Advanced Biomedical Science; Konkuk University; Seoul 143-701 Korea
3. School of Life Sciences; Ulsan National Institute of Science and Technology (UNIST); UNIST-gil; 50 Ulsan 689-798 Korea
4. Department of Obstetrics and Gynecology; Konkuk University School of Medicine; Seoul 143-729 Korea
5. Institute for Biomedical Engineering; Department of Cell Biology; RWTH Aachen University Medical School; Aachen University; Aachen Germany
6. Department of Biomedical Science and Technology; Institute of Advanced Biomedical Science; Konkuk University; Seoul 143-701 Korea
7. Department of Medicine; College of Medicine; Chung-Ang University; Seoul 156-756 Korea
8. Research Institute of Medical Science; Konkuk University; Seoul 143-701 Korea