1. Brandão HV, Guimarães A, Cruz AA, Cruz CS. Fatores associados à gravidade da asma entre adultos de um centro de referência para asma. Rev bras alerg imunopatol 2012;35(3):98-102.

2. Bateman ED, Boushey HA, Bousquet J, Busse WW, Clark TJ, Pauwels RA, Pedersen SE, GOAL Investigators Group. Can guideline-defined asthma control be achieved? The Gaining Optimal Asthma ControL study. Am J Respir Crit Care Med 2004;170:836-44.

3. Giavina-Bianchi P, Aun MV, Bisaccioni C, Agondi R, Kalil J. Difficultto-control asthma management through the use of a specific protocol. Clinics (Sao Paulo) 2010;65:905-18.

4. Bisaccioni C, Aun MV, Cajuela E, Kalil J, Agondi RC, Giavina-Bianchi P. Comorbidities in severe asthma: frequency of rhinitis, nasal polyposis, gastroesophageal reflux disease, vocal cord dysfunction and bronchiectasis. Clinics (Sao Paulo) 2009;64:769-73.