1. World Health Organization (2022, October 01). Available online: https://covid19.who.int/.
2. (2022, October 01). National Health Commission of the People’s Republic of China, Available online: http://www.nhc.gov.cn/.
3. World Health Organization (2022, October 01). Summary of Probable SARS Cases with Onset of Illness from 1 November 2002 to 31 July 2003. Available online: https://www.who.int/publications/m/item/summary-of-probable-sars-cases-with-onset-of-illness-from-1-november-2002-to-31-july-2003.
4. (2020, August 01). The Impact of the COVID-19 Pandemic on the Public. Available online: https://www.sohu.com/a/394018808_120198690.
5. Caplan, G. (1964). The Principles of Preventive Psychiatry, Basic Books.