Pil Kyu Kang, Yong Bae Kim, Ik Soo Ahn, Jong Kyu Lee, Ku Seok Han, Hwa Sung Kim, Kyu Yoon Hwang, Gap Soo Lee, Kyu Dong Ahn, Byung Kook Lee

Korean J Occup Environ Med.1998;10(4):438-449.   Published online 2019 January 31     DOI: http://dx.doi.org/10.35371/kjoem.1998.10.4.438