1 Title: Can OpenEHR, ISO 13606 and HL7 FHIR work together? An agnostic perspective for the selection and application of EHR standards from Spain. Corresponding author: Miguel Pedrera Jiménez, Data Science Unit, Hospital Universitario 12 de Octubre, Madrid, Spain. Av. de Córdoba, s/n, 28041 Madrid. miguel.pedrera@salud.madrid.org; +34 634209791. Co-authors  Noelia García Barrio, ngbarrio@salud.madrid.org. Data Science Unit, Hospital Universitario 12 de Octubre, Madrid, Spain.  David Moner Cano, damoca@veratech.es. Veratech for Health, Valencia, Spain.  Santiago Frid, frid@clinic.cat. Unit of Medical Informatics, Hospital Clinic de Barcelona, Barcelona, Spain.  Diego Boscá Tomás, diebosto@veratech.es. Veratech for Health, Valencia, Spain.  Jose Alberto Maldonado Segura, jamaldo@veratech.es. Veratech for Health, Valencia, Spain.  Raimundo Lozano Rubí, rlozano@clinic.cat. Unit of Medical Informatics, Hospital Clinic de Barcelona, Barcelona, Spain.  Dipak Kalra, dipak.kalra@i-hd.eu. The European Institute for Innovation through Health Data (i~HD).  Thomas Beale, thomas.beale@openehr.org. Ars Semantica, UK. Specifications Program, OpenEHR International.  Adolfo Muñoz Carrero, adolfo.munoz@isciii.es. Digital Health Research Unit, Instituto de Salud Carlos III (ISCIII), Madrid, Spain.  Pablo Serrano Balazote, pserranob@salud.madrid.org. Data Science Unit, Hospital Universitario 12 de Octubre, Madrid, Spain. Keywords: Electronic Health Records, Health Information Standards, OpenEHR, ISO 13606, HL7 FHIR.