1. Department of Cardiology, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
2. Cardiovascular Research Center, School of Basic Medical Sciences, Xi’an Jiaotong University Health Science Center, Xi’an, China
3. Department of Medicine, University of California, San Diego, La Jolla, California, USA
4. Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan