title: Neonatal screening in the state of Piauí: an urgent need - a study on the prevalence of sickle cell disease in newborns.
authors.affiliation: Universidade Federal do Piauí - UFPI, Teresina, PI, Brazil.
authors.forename: Leonardo Ferreira
authors.initials: LF
authors.lastname: Soares
authors.forename: Oneide Angélica Monteiro Dos Santos
authors.initials: OA
authors.lastname: Rocha
authors.forename: Evaldo Hipólito
authors.initials: EH
authors.lastname: de Oliveira
authors.forename: José Felipe Pinheiro do Nascimento
authors.initials: JF
authors.lastname: Vieira