Zeng, Irene Zeppenfeld, Katja Zeppenfeld, Katja Żera, Tymoteusz Zeren, Gönül, Ordu state hospital, Cardiology Zeren, Gönül Zeren, Gönül Zeriouh, Mohamed Zervakis, Stelios Zeybek, Rahmi Zgoła, Katarzyna, Department of Cardiology, Postgraduate Medical School, Grochowski Hospital, Warsaw, Poland Zhang, Dapeng Zhang, Guiming, Department of Cardiovasology，the First Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang , P.R.China, 830011. Zhang, Hong−Xiang Zhang, Jian Zhang, Jie Zhang, Ling, Dept. of Electrical and Computer Engineering, The University of Iowa, Iowa City, USA Zhang, Pengxia Zhang, Ping Zhang, Pingyang Zhang, Qiubing, Department of Cardiovasology, the Central Hospital of Guangyuan, Guangyuan, Sichuan, P.R. China Zhang, Shigeng Zhang, Shu Zhang, Shu Zhang, Xiaofang