Seung Min Choi, Young Jin Joo, Kwang Won Ryu, Jae Hyun Cho, Woo Seob Eom, Jeon Soo Ryu, Do Kyun Kim, Young Jin Kim, Sang Hyun Kim, Bum Gon Yeo, Su Yeon Lee, Sang Woon Park, Yong Duck Jeon
J Korean Geriatr Soc. 2003;7(2):164-169. Published online June 30, 2003