Yoo Seock Cheong, Jung Lee Park, Eal Whan Park, Sun Mi Yoo, Ki Sung Kim, Guwang Hwy Kim, Dae Hong Min, Yun Jong Park, Sug Kyu Shim, Young Ill Won, Hung Tag Yeoum, Jong Min Lee, Hye Weon Jung
Korean J Fam Med. 1999;20(1):55-61. Published online January 1, 1999