Hyun Ju Yoon, Won Yu Kang, Min Gu Lee, Kye Hun Kim, Ju Han Kim, Younggeun Ahn, Myung Ho Jeong, Jung Gwan Cho, Jung Chaee Kang, Jun Tae Kim, Man Seok Park, Ki Hyun Cho, Jong Chun Park
J Korean Geriatr Soc. 2009;13(1):16-22. Published online March 31, 2009