1. Telehealth Network of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
2. Medical School and Clinical Hospital, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, Brazil.
3. Federal University of São João Del-Rey, Divinópolis, Minas Gerais, Brazil.
4. Department of Statistics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.