Kun Hyung Kim, Myung Ho Jeong, Shin Bae Joo, Seung Uk Lee, Nam Ho Kim, Jang Hyun Cho, Young Keun Ahn, Jeong Gwan Cho, Jong Chun Park, Jung Chaee Kang

Korean Circ J.2000;30(4):497-501.   Published online 2000 April 30     DOI: http://dx.doi.org/10.4070/kcj.2000.30.4.497