1 Department of Physiology, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, 75 Bokji-ro, Busanjin-gu, Busan, 614-735, South Korea. phyhanj@inje.ac.kr.
2 East Carolina Diabetes and Obesity Institute, Departments of Physiology and Kinesiology, East Carolina University, 115 Heart Drive, ECHI - Mail Stop 743, Greenville, NC, 27834, USA.
3 Section for Cell Biology and Physiology, Department of Biology, University of Copenhagen, Universitetsparken 13, 2100, Copenhagen Ø, Denmark.