Min-Kyung Kang, Bong-Ryong Choi, Young-Hoon Jeong, Jong-Woo Kim, Choong-Hwan Kwak, Myeong-Gi Seo, Yeon-Jeong Ahn, Jung-Hyun Cho, Kyung-Nyeo Jeon, Jin-Yong Hwang

J Cardiovasc Ultrasound.2008;16(3):93-95.   Published online 2008 September 30     DOI: http://dx.doi.org/10.4250/jcu.2008.16.3.93