1. H. Ritchie and M. Roser, “Smoking,” Our World in Data, 2022. [Online]. https://ourworldindata.org/smoking. [Accessed: 26-Jan-2022].
2. World Health Organization (WHO), “WHO global report on trends in prevalence of tobacco smoking,” Geneva, 2015.
3. World Health Organisation, “Tobacco,” Fact Sheet, 2021. [Online]. https://www.who.int/news-room/fact-sheets/detail/tobacco.
4. Cardiovascular Effects of Secondhand Smoke;J. Barnoya;Circulation,2005
5. World Health Organization Office for South-East Asia, “Factsheet 2018 Nepal,” New Delhi, 2018.