1. Health and Exercise Science Laboratory, Institute of Sports Science, Seoul National University College of Education, Seoul, Korea.
2. Laboratory of Developmental Biology and Genomics, BK21 Program for Veterinary Science, Institute for Veterinary Science, Seoul National University College of Veterinary Medicine, Seoul, Korea.
3. Korea Mouse Phenotyping Center (KMPC), Seoul, Korea.
4. Institute on Aging, Seoul National University College of Medicine, Seoul, Korea.