SARS-CoV-2 infection in infants aged 28 days and younger. A multicentre case series Marta Velasco Rodríguez-Belvís; Enrique Medina Benítez; Diana García Tirado; Myriam Herrero Álvarez; David González Jiménez;

Management of Helicobacter pylori infection in the pediatric age Gonzalo Galicia Poblet; Teresa Alarcón Cavero; Natalia Alonso Pérez; Belén Borrell Martínez; Gonzalo Botija Arcos; Maria Luz Cilleruelo Pascual; Leticia María González Martín; Anselmo Hernández Hernández; Beatriz Martínez Escribano; Xenia Ortola Castells; Jana Rizo Pascual; Pedro Urruzuno Tellería; Ana María Vegas Álvarez;