Ho-Yeon Song, Young-Hee Kim, Su-Jin Seok, Hyo-Wook Gil, Jong-Oh Yang, Eun-Young Lee, Sae-Yong Hong

J Korean Med Sci.2012;27(1):3-9.   Published online 2011 December 19     DOI: http://dx.doi.org/10.3346/jkms.2012.27.1.3