Urgência na introdução do NAT: é fundamental não cometer os erros do passado: [carta ao editor] / Urgency of the introduction of NAT: it is crucial not to commit past errors: [letter to the editor]

This letter to the Editor about "the urgency of the introduction ofNAT in Brazil" complements and defines the position of theDirectorate of the Brazilian Society of Hematology and Hemotherapyin respect to letters to the Editor both in this and the previous issueof the RBHH.