Thirty-day readmissions in children with complex chronic conditions Daiana Basso; Carolina Bermúdez; Vanessa Carpio; Francisco Tonini; Fernando Ferrero; Mariano Esteban Ibarra;

Evidence-based approach for selecting human resources in urgent transport Ana Elisa Laso-Alonso; Pablo Del Villar-Guerra; Cristina Molinos-Norniella; Vicent Modesto-Alapont; David Pérez-Solís; Alberto Medina;

Role of fractional exhaled nitric oxide in patients with sickle cell disease Agustín Muñoz-Cutillas; Sara Bellón-Alonso; Eduardo Bardón-Cancho; Santiago Rodríguez-Tubío-Dapena; Lucía Díez-Llamazares; Rosa Rodríguez-Fernández; Juan Luis Rodríguez-Cimadevilla;