2004³â PDF ³í¹®ÀÚ·á°¡ ¾÷µ¥ÀÌÆ® µÇ¾ú½À´Ï´Ù. ¾Æ·¡ ÁÖ¼Ò¿¡¼ È®ÀÎÇϽǼö ÀÖ½À´Ï´Ù. http://www.drheart.net/korean/research/research_history.htm