1. Department of Medicine, Federal University of Pará, Belém 66073-005, PA, Brazil
2. Dante Pazzanese Institute of Cardiology, São Paulo 04012-909, SP, Brazil
3. Santa Marcelina College Medical School, São Paulo 08290-005, SP, Brazil
4. Department of Medicine, Feevale University, Novo Hamburgo 93510-235, RS, Brazil
5. Ophir Loyola Hospital, Belém 66063-240, PA, Brazil