by 박종하(Jong Ha Park), 이영하(Yung Ha Lee), 장수일(Soo Il Chang), 황일우(Il Woo Whang)
Published in Annals of surgical treatment and research (1982)

by 崔世永(Sae Yung Choi), 李瑛夏(Yung Ha Lee)
Published in Annals of surgical treatment and research (1972)