1. College of Pharmacy; Research Institute of Pharmaceutical Sciences; Kyungpook National University; Daegu 702-701 Korea
2. College of Pharmacy; Yeungnam University; Gyeongsan Gyeongbuk 712-749 Korea
3. College of Natural Sciences; Kangwon National University; Gangwon-Do 200-701 Korea
4. College of Pharmacy; Catholic University of Daegu; Gyeongsan 712-702 Korea