1 Epigenome Research Center, Genome Institute, KRIBB, Daejeon 34141, Korea.
2 Epigenome Research Center, Genome Institute, KRIBB, Daejeon 34141, Korea.; Department of Functional Genomics, Korea University of Science and Technology, Daejeon 34141, Korea.
3 Department of Pathology, Chungnam National University College of Medicine, Daejeon 35015, Korea.