title: Challenges for medical residency in hematology and transfusion medicine in Brazil.
authors.affiliation: Faculdade de Medicina da Universidade Federal do Rio de Janeiro - UFRJ, Rio de Janeiro, RJ, Brazil.
authors.forename: Angelo
authors.initials: A
authors.lastname: Maiolino
authors.forename: Nelson
authors.initials: N
authors.lastname: Spector