title: Tetravalent meningococcal vaccination for infants.
authors.affiliation: Servicio de Infectología Pediátrica, Hospital Nacional de Niños de Costa Rica, Dr Carlos Sá enz Herrera, PO Box 1654-1000, Avenida Paseo Colón, San José, Costa Rica. rolandoug@racsa.co.cr
authors.forename: Rolando
authors.initials: R
authors.lastname: Ulloa-Gutierrez
authors.forename: Alejandra
authors.initials: A
authors.lastname: Soriano-Fallas
authors.forename: Kattia
authors.initials: K
authors.lastname: Camacho-Badilla