1. Definition of Emergency Medicine;Ann Emerg Med,2016
2. Definition of emergency medicine;SM Schneider;Acad Emerg Med Off J Soc Acad Emerg Med,1998
3. Position Statement on Emergency Medicine Definitions From the Canadian Association of Emergency Physicians 2016. [cited 2017 Nov 16]; http://www.caep.ca/sites/caep.ca/files/caep/position_statement_on_emergency_medicine_definitions.pdf
4. EUSEM. Policy Statement on Emergency Medicine in Europe 2013. [cited 2017 Nov 16]; http://www.eusem.org/policystatement/
5. Trends and characteristics of US emergency department visits, 1997–2007;N Tang;JAMA,2010