1. R&D Center, Hanbul Cosmetics Co. Ltd, 72-7, Yongsung-ri, Samsung-myun, Umsung-kun, Chungbuk 369-834, Korea
2. Department of Biochemistry and Molecular Biology, Faculty of Medicine, Tupper Medical Building, Dalhousie University, 5850 College St., Halifax, Nova Scotia B3H 1×5, Canada