1. Pontificia University Catholic of São Paulo, São Paulo, Brazil
2. Hospital Miguel Soeiro—UNIMED, Sorocaba, São Paulo, Brazil
3. Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
4. Hospital SAMEL Manaus, Amazonas, Brazil
5. Hospital Delphina Rinaldi Abdel Aziz, Manaus, Amazonas, Brazil
6. Hospital Universitário Júlio Muller, Cuiabá, Mato Grosso, Brazil
7. Hospital Unimed Vitória, Vitoria, Espírito Santo, Brazil
8. Hospital das Clínicas—Federal University of Pernambuco, Recife, Pernambuco, Brazil