1. S. Kaplan , K. Thomas , Despite promises, testing delays leave Americans ‘flying blind,’ NY Times, 6 April 2020. https://www.nytimes.com/2020/04/06/health/coronavrus-testing-us.html. Accessed 30 April 2020.
2. L. Kihara , Japan’s Abe says cannot hold Olympics unless pandemic contained. Reuters, 29 April 2020. https://www.reuters.com/article/us-health-coronavirus-japan-olympics/japans-abe-says-impossible-to-hold-olympics-unless-pandemic-contained-idUSKCN22B0QR. Accessed 30 April 2020.
3. R. Ip , The bitter pill medical workers on strike might have to swallow. South China Morning Post, 9 February 2020. https://www.scmp.com/comment/opinion/article/3049473/coronavirus-outbreak-hong-kongs-medical-workers-strike-could-have. Accessed 30 April 2020.
4. Presidential Popularity from Truman to Johnson
5. Anatomy of a rally effect: George W. Bush and the war on terrorism;Hetherington;APSC,2003