Differential clinic in children infected by SARS-CoV-2, traceability of contacts and cost-effectiveness of diagnostic tests: Cross-sectional observational study Antia Fiel-Ozores; María Luisa González-Durán; Reyes Novoa-Carballal; María del Mar Portugués-de la Red; Isabel Fernández-Pinilla; Jorge Julio Cabrera-Alvargonzález; Cristina Martínez-Reglero; Sonia Rey-Cao; Ana Concheiro-Guisán;

Impact of the COVID-19 pandemic on emergency department: Early findings from a hospital in Madrid Miguel Ángel Molina Gutiérrez; José Antonio Ruiz Domínguez; Marta Bueno Barriocanal; Begoña de Miguel Lavisier; Rosario López López; Julia Martín Sánchez; María de Ceano-Vivas la Calle;

Changes from COVID-19. A perspective from internal pediatric medicine Pedro J. Alcalá Minagorre; Enrique Villalobos Pinto; José Miguel Ramos Fernández; Rosa Rodríguez-Fernández; Miguel Vázquez Ronco; Luis Escosa-García; Juan Ignacio Montiano Jorge; Juan José García García;