Kyungpook National University - Department of Applied Biosciences, Dankook University - Department of Microbiology, Kyungpook National University - Institute of Life Science and Biotechnology, Kyungpook National University - Department of Applied Biosciences, Kyungpook National University - Department of Life Science, Harvard University - Department of Radiation Oncology and University of Texas at Dallas - Department of Radiation Oncology