Young-Khee Oh , Ki-Ryong Lee , Kwang-Baik Ko , Ick-Tae Yeom顺便来一下地名:Yonsei University, 134 Shin-Chon Dong, Seo-Dae-Mun Gu, Seoul, Republic of KoreaSungKyunKwan University, 300 Cheon-Cheon Dong,Jang-An Gu, Suwon, Republic of Korea