1. Doctor, Department of Hematology and Hemotherapy, Federal University of Pernambuco, Pernambuco, Brazil
2. Doctor, Department of Hematology and Hemotherapy, Maurício de Nassau University Center, Pernambuco, Brazil
3. Doctor, Department of Hematology and Hemotherapy, Hematology and Hemotherapy Foundation of Pernambuco (Hemope), Pernambuco, Brazil