Jae Kyung Choi, Chang Hoon Jang, Ho Joong Yoon, Jong Mok Yang, Wook Sung Chung, Seung Suk Chun, Jae Hyung Kim, Kyu Bo Choi, Soon Jo Hong

Korean Circ J.1991;21(5):914-918.   Published online 1991 October 31     DOI: http://dx.doi.org/10.4070/kcj.1991.21.5.914