Alameda César, Carlos Matía Ángel, Casado Verónica
Department of Healthcare Resources, Castile-Leon Regional Health Authority, Valladolid, Spain.
Los Comuneros Health Centre, Burgos Primary Care Authority, Burgos, Spain.
NPJ Prim Care Respir Med. 2016 Oct 20;26:16070. doi: 10.1038/npjpcrm.2016.70.