1. Department of Cardiovascular Surgery, Hospital Norte Paranaense Jardim Universitário Arapongas Paraná Brazil
2. Department of Cardiovascular Surgery PROCAPE, University of Pernambuco Recife Brazil
3. Nucleus of Postgraduate and Research in Health Sciences, Faculty of Medical Sciences and Biological Sciences Institute – FCM/ICB Recife Pernambuco Brazil
4. Department of Health Policy and Management Johns Hopkins Bloomberg School of Public Health Baltimore Maryland United States
5. Department of Cardiovascular Surgery Federal University of Uberlândia Uberlândia MG Brasil
6. Department of Cardiovascular Surgery Institute of Cardiology ‐ Fundação Universitária de Cardiologia Porto Alegre RS Brazil
7. Department of Cardiology and Cardiovascular Surgery Heart Institute ‐ INCOR‐HCFM‐USP São Paulo SP Brazil