Title:Influenza vaccine effectiveness in preventing hospitalisation of individuals 60 years of age and over with laboratory-confirmed influenza, Valencia Region, Spain, influenza season 2016-17 / Ainara Mira Iglesias ... et al.
Title:Países industrializados y países en vías de desarrollo como antagonistas en la lucha contra el cambio climático en la prensa argentina / María Teresa Mercado Sáez.
Title:Association of Painful musculoskeletal conditions and migraine headache with mental and sleep disorders among adults with disabilities, Spain, 2007-2008.