Institution: | 1. Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, Henan, PR China
Department of Cardiology, Zhengzhou University People's Hospital, Zhengzhou, Henan, PR China
Department of Cardiology, Fuwai Central China Cardiovascular Hospital, Zhengzhou, Henan, PR China;2. Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, Henan, PR China |