Gyung-Min Park, Jong-Young Lee, Yong-Giun Kim, Sun-Jin Boo, Jong-Min Song, Duk-Hyun Kang, Jae-Kwan Song

J Cardiovasc Ultrasound.2009;17(3):102-105.   Published online 2009 September 30     DOI: http://dx.doi.org/10.4250/jcu.2009.17.3.102