1. Department of Cardiology, Internal Medicine II Medical University of Vienna Waehringer Guertel 18‐20 A‐1090 Vienna Austria
2. Herz Zentrum Waehring Vienna Austria
3. Institute of Analytical Chemistry University of Vienna Vienna Austria
4. Joint Metabolome Facility University of Vienna and Medical University of Vienna Vienna Austria
5. Department of Angiology, Internal Medicine II Medical University of Vienna Vienna Austria