1. Department of Nuclear Medicine, Cardiac Imaging, University Hospital Zurich , Zurich, Raemistrasse 100, CH-8091 , Switzerland
2. Department of Cardiology, Blacktown Hospital, University of Western Sydney , Blacktown Road , Blacktown, NSW 2148, Australia
3. School of Medical Sciences, Faculty of Medicine, University of New South Wales , Kensington, NSW 2052 , Australia