1. Department of Cardiovascular Surgery, S.G. Sukhanov Federal Center of Cardiovascular Surgery E.A. Vagner Perm State Medical University Perm Russia
2. Department of Cardiovascular Surgery Federal Center for Cardiovascular Surgery Astrakhan Russia
3. Department of Cardiovascular Surgery Astrakhan State Medical University Astrakhan Russia
4. Department of Cardiovascular Surgery, Faculty of Medicine, Heart Center University of Freiburg Freiburg Germany
5. Department of Cardiovascular Surgery at the Pronto Socorro Cardiológico de Pernambuco (PROCAPE) Recife Pernambuco Brazil
6. Department of Medicine, Faculty of Medicine Imperial College London London UK
7. Johns Hopkins Bloomberg School of Public Health Johns Hopkins University Baltimore Maryland USA
8. Department of Thoracic and Cardiovascular Surgery, West German Heart and Vascular Center Essen, Essen University Hospital University Duisburg‐Essen Essen Germany