So Yeon Choi, Joon Han Shin, Han Soo Kim, Seung Jea Tahk, Byung Il Choi, Dong Soo Kim, Yang Soo Jang, Hyun Seung Kim, Jong Cheol Ryu, Doo Il Kim, Dong Soo Kim

Korean Circ J.2000;30(2):174-182.   Published online 2000 February 28     DOI: http://dx.doi.org/10.4070/kcj.2000.30.2.174