Chen, Yong Chen, Yundai Chen, Zhangwei Chen, Zhaoyang, Department of Cardiology, Fujian Medical University Union Hospital Chen, Zhi Chen, Zhongxiu Chen, Zhongxiu Cheng, Chin-Chang Cheng, Hsiao-Liang Cheng, Leilei Cheng, Leilei, Department of echocardiography, Zhongshan hospital of Fudan university, Shanghai institute of cardiovascular disease, Shanghai, China; Cheng, Leilei (China) Cheng, Lijun Cheng, Xiang Cheng, Xinqi, The first affiliated hospital of Anhui medical university Cheng, Xujie Cheng, Ya-Jung Cheng, Yanping Cheng, Zhong Cheraghi, Sara, Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran Cheriex, Emile C. Cherkas, Andriy, Department of Medicine, Lviv College of Physical Culture, Lviv, Ukraine Chevalier, Philippe Chełstowska, Beata Chi, Pei-Ling