Articles cited:
https://www.history.com/news/cigarette-ads-doctors-smoking-endorsement
https://www.cbc.ca/news/health/flu-deaths-reality-check-1.1127442
https://www.cnbc.com/2018/02/22/medical-errors-third-leading-cause-of-death-in-america.html
https://jamanetwork.com/journals/jamainternalmedicine/article-abstract/2548255