1. Global Strategy for the Diagnosis, Management and Prevention of Chronic Obstructive Pulmonary Disease (Updated);Global Initiative for Chronic Obstructive Lung Disease,2015
2. Spanish guideline for COPD (GesEPOC). Update 2014;Miravitlles;Arch Bronconeumol,2014
3. Chronic obstructive pulmonary disease: management of chronic obstructive pulmonary disease in adults in primary and secondary care (partial update);National Institute for Health and Care Excellence,2010
4. Canadian Thoracic Society recommendations for management of chronic obstructive pulmonary disease – 2007 update;O’Donnell;Can Respir J,2007
5. Norma nr 028/2011 – Diagnóstico e Tratamento da Doença Pulmonar Obstrutiva Crónica. Portugal;Direcção Geral de Saúde,2013