Kwang Il Kim, Hyun Jae Kang, Kyoung Hoon You, Young Seok Cho, In Ho Chae, Hyo Soo Kim, Cheol Ho Kim, Dae Won Sohn, Byung Hee Oh, Myoung Mook Lee, Young Bae Park, Yun Shik Choi, Young Woo Lee
J Korean Geriatr Soc. 1998;2(1):35-41. Published online June 30, 1998