1. Cellular and Molecular Toxicology Laboratory; Korea Institute of Science and Technology; Cheongryang Seoul 130-650 Korea
2. Department of Preventive Medicine; Korea University, Korea Project for Reducing Light Pollution Effects to Human and Ecosystem; Korea
3. Department of Pharmacology and Toxicology, Human and Environmental Toxicology; Korea University of Science and Technology; Gajeong-Ro 217, Yuseong-Gu Daejeon 305-350 Korea