1. Global tuberculosis report 2020. (2020). Accessed. June 12, 2021: https://www.who.int/publications/i/item/9789240013131.
2. Trends in incidence and mortality of tuberculosis in India over past three decades: a joinpoint and age-period-cohort analysis;Dhamnetiya D;BMC Pulm Med,2021
3. WHO factsheet, 2017. chronic obstructive pulmonary disease (COPD). (2017). Accessed: June 12, 2021: https://communitymedicine4all.com/2017/11/19/who-updates-fact-sheet-on-chronic-obstructive-pulmonary-disease-copd-17-....
4. Global burden of COPD;López-Campos JL;Respirology,2016
5. The top 10 causes of death. (2022). Accessed. March 28, 2022: https://www.who.int/news-room/fact-sheets/detail/the-top-10-causes-of-death.