Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin 150001, China;
Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin 150001, China;
Department of Cardiology, People's Hospital of Peking University, Beijing 100034, China;
idiopathic dilated cardiomyopathy; human leukocyte antigen; gene polymorphism; genetic susceptibility;