1. Postgraduate Program of Infectious Diseases and Tropical Medicine, School of Medicine, Universidade Federal de Minas Gerais , Av. Professor Alfredo Balena, 190, Santa Efigênia, Belo Horizonte, MG 30130 100 , Brazil
2. Hospital das Clínicas, School of Medicine,Universidade Federal de Minas Gerais , Av. Professor Alfredo Balena, 190, Santa Efigênia, Belo Horizonte, MG 30130 100 , Brazil
3. Cardiac Ultrasound Lab, Massachusetts General Hospital, Harvard Medical School , 55 Fruit Street Boston, MA 02114 , USA
4. Department of Statistics, Universidade Federal do Paraná , Curitiba Rua Cel. Francisco Heráclito dos Santos, 100 Centro Politécnico - Jardim das América sEdifício do Setor de Ciências Exatas, 81531-980, Curitiba, PR , Brazil
5. Department of Cardiology, Blacktown Hospital , Blacktown Road, Blacktown, Sydney, NSW 2148 , Australia