Castillo, J. A., Plaza, V., Rodrigo, G., Juliá, B., Picado, C., & Mullol, J. (2015). Nasal polyps, aspirin sensitivity, and late onset asthma are crucial to identify severe asthma. clinicaltrials.gov id: Nct01513837. Clin Transl Allergy.

Castillo, José A., Vicente Plaza, Gustavo Rodrigo, Berta Juliá, César Picado, and Joaquim Mullol. "Nasal Polyps, Aspirin Sensitivity, and Late Onset Asthma Are Crucial to Identify Severe Asthma. Clinicaltrials.gov Id: Nct01513837." Clin Transl Allergy 2015.

Castillo, José A., et al. "Nasal Polyps, Aspirin Sensitivity, and Late Onset Asthma Are Crucial to Identify Severe Asthma. Clinicaltrials.gov Id: Nct01513837." Clin Transl Allergy 2015.