1. Ilsong Institute of Life Science, Hallym University, Anyang, Gyeonggi-do, Republic of Korea
2. Department of Biomedical Gerontology, Graduate School of Hallym University, Chuncheon, Gangwon-do, Republic of Korea
3. Department of Microbiology, College of Medicine, Hallym University, Chuncheon, Gangwon-do, Republic of Korea
4. New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, USA