1. Doping Control Center; Korea Institute of Science and Technology; Hwarang-ro 14-gil 5 Seongbuk-gu Seoul 136-791 Korea
2. Department of Pharmacology and Pharmacogenomics Research Center, School of Medicine; Inje University; 875, Haeun-daero Haeundae-gu Busan Korea
3. Department of Chemistry, Research Institute for Natural Sciences; Korea University; 145, Anam-ro Seongbuk-gu Seoul 136-701 Korea