Cardiomyopathies may be idiopathic or secondary to an underlying definable systemic disorder, especially in a young population.
Cardiomyopathies may be idiopathic or secondary to an underlying definable systemic disorder, especially in a young population.
摘要在年轻的族群中，有许多的先天性代谢异常疾病会造成心肌病变。