Jae-Hyeong Park, Su Jin Yoo, Shin Kwang Kang, Jae-Hwan Lee, Si Wan Choi, Jin-Ok Jeong, In-Whan Seong

J Cardiovasc Ultrasound.2009;17(1):19-21.   Published online 2009 March 31     DOI: http://dx.doi.org/10.4250/jcu.2009.17.1.19