1. M.T. Barbosa, M. Morais-Almeida, C.S. Sousa, J. Bousquet, The “big five” lung diseases in CoViD-19 pandemic–a Google Trends analysis, pulmonology, 27 (2021) 71
2. WHO, Chronic Respiratory Disease, 2022. https://www.who.int/health-topics/chronic-respiratory-diseases
3. WHO, Covid-19, 2022. https://covid19.who.int/
4. The burden of Lung disease, 2022.https://www.erswhitebook.org/chapters/the-burden-of-lung-disease/
5. Future Projection, 2022. https://www.erswhitebook.org/chapters/the-burden-of-lung-disease/future-projections, the WHO estimates,all deaths globally in 2008