1. Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV, USA
2. Center for Pain Research, Department of Anesthesiology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
3. Department of Physiology, Sungkyunkwan University School of Medicine, Suwon, Gyeonggi-do, Korea
4. Department of Veterinary Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, Korea
5. Department of Veterinary Physiology, College of Veterinary Medicine, Seoul National University, Seoul, Korea