Objective To evaluate the diagnostic value of endomyocardial biopsy (EMB) for endomyocardial fibrosis (EMF), and to investigate the relationship between Coxsackie virus B (CVB) and EMF.

• 目的评价心内膜心肌活检（EMB）对心内膜心肌纤维化（EMF）的诊断价值，以及探讨柯萨奇B组病毒（CVB）与EMF的关系。