Ran Lee, Yoo Seock Cheong, Eal Whan Park, Eun Young Choi, Ki Sung Kim, Sug Kyu Sim, Yun Jong Park, Hung Tag Yeoum, Eun Joo Jeong, Sun Yeol Kim, Sung Suhmoon, So Jeong Lee, Jong Taik Kim, Ki Hyoung Kang
J Korean Acad Fam Med. 2007;28(4):286-291. Published online April 10, 2007