[1] UFMG Univ Fed Minas Gerais, Intenal Med, Belo Horizonte, MG, Brazil
[2] UFPA Univ Fed Para, Dept Internal Med, Belem, Para, Brazil
[3] Univ Fed Amazonas, Dept Internal Med, Fac Med, Manaus, Amazonas, Brazil
[4] HU EBSERH UFMS, Dept Internal Med, Campo Grande, MS, Brazil
[5] UHN Univ Hlth Network, Princess Margaret Canc Ctr, Med Oncol & Hematol Dept, Toronto, ON, Canada