However, in recent years the incidence and mortality rate of CHD in China has been going up.CHD is a multifactorial disease which is related to both the genetic and environ- mental factors.

• 背景：冠心病是严重危害人类身体健康、影响人类生活质量的疾病，是目前我国及大多数国家的主要死因与疾病负担，而且近年来我国冠心病的发病率和死亡率呈上升趋势。