Research
Difficulties in differential diagnosis of COPD and asthma in primary care
Marc Miravitlles, Isabel Andreu, Yolanda Romero, Salvador Sitjar, Andreu Altés and Esther Anton
British Journal of General Practice 2012; 62 (595): e68-e75. DOI: https://doi.org/10.3399/bjgp12X625111