by 金振瑛(J. Y. Kim), 辛圭澤(K. T. Shin), 郭鎭榮(J. Y. Kwak)
Published in Annals of surgical treatment and research (1981)

by 林榮根(Y. K. Lim), 郭再濚(J. Y. Kwak), 朴永寬(Y. K. Park)
Published in Annals of surgical treatment and research (1981)

by 徐在皓(J. H. Suh), 郭鎭榮(J. Y. Kwak), 鄭德載(D. J. Chung), 姜亨植(H. S. Kang)
Published in Annals of surgical treatment and research (1968)