1. Global Initiative for Asthma. Global Strategy for Asthma Management and Prevention. https://www.ginasthma.org (2019).
2. Akinbami, L. J., Moorman, J. E. & Liu, X. Asthma prevalence, health care use, and mortality: United States, 2005–2009. Natl. Health Stat. Rep. 32, 1–14 (2011).
3. Reddel, H.K., et.al., American Thoracic Society/European Respiratory Society Task Force on Asthma Control and Exacerbations. An official American Thoracic Society/European Respiratory Society statement: Asthma control and exacerbations: standardizing endpoints for clinical asthma trials and clinical practice. Am. J. Respir. Crit. Care Med. 180, 59–99 (2009).
4. Calhoun, W. J. et al. Clinical burden and predictors of asthma exacerbations in patients on guideline-based steps 4–6 asthma therapy in the TENOR cohort. J. Allergy Clin. Immunol. Pract. 2, 193–200 (2014).
5. Tay, T. R., Lee, J. W. & Hew, M. Diagnosis of severe asthma. Med. J. Aust. 209, S3–S10 (2018).