Objective To determine the physiological prevalence of valvular regurgitation in normal children, its influence to heart size and risk factors.
目的：探讨小儿心脏生理性瓣膜反流的发生率、对心脏大小的影响及产生机理。
Objective To determine the physiological prevalence of valvular regurgitation in normal children, its influence to heart size and risk factors.
目的：探讨小儿心脏生理性瓣膜反流的发生率、对心脏大小的影响及产生机理。
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