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Hemodynamic evaluation of bovine pericardial xenograft valves in the mitral position by stress Doppl
【机 构】
：
CardiovascularInstituteandFuWaiHospital,ChineseAcademyofMedicalSciences,Beijing100037,
【出 处】
：
中华医学杂志英文版
【发表日期】
：
1993年106期
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