EPI-ASTHMA study protocol: a population-based multicentre stepwise study on the prevalence and characterisation of patients with asthma according to disease severity in Portugal.

Cristina JácomeDinis BritoCatarina JoãoFilipa LopesJanete SantosLiliana AmorimMaria João BarbosaMarisa PardalPedro TeixeiraFilipa BernardoJoao A FonsecaJaime Correia-de-Sousa

Published in: BMJ open (2022)

NCT05169619.

Keyphrases

study protocol
chronic obstructive pulmonary disease
lung function
randomized controlled trial
clinical trial
allergic rhinitis
risk factors
double blind
open label
cystic fibrosis
air pollution