1. University of Huddersfield and Calderdale and Huddersfield NHS Foundation Trust, UK
2. Yvonne L. Munn Center for Nursing Research, Massachusetts General Hospital, Boston, USA
3. University of Missouri, USA
4. Wroclaw Medical University, Poland
5. Department for Internal Medicine and Cardiology, Salzburg University Hospital, Austria
6. University General Hospital Attikon, Greece
7. 1st Department of Cardiology, Medical University of Warsaw, Poland
8. University of Leeds, UK