1. 50 years of modern EMS. Ems.gov, https://www.ems.gov/OEMShistory.html.
2. ABMS recognizes EMS as subspecialty. EMS World; 26 Sept. 2010. https://www.hmpgloballearningnetwork.com/site/emsworld/news/10336918/abms-recognizes-ems-subspecialty.
3. ACGME Program Requirements for Graduate Medical Education in Emergency Medical Services. ACGME; 1 July 2020. https://www.acgme.org/globalassets/pfassets/programrequirements/112_emergencymedicalservices_2020.pdf.
4. Flamm A, Burch K, Lubin J, Mencl F. Characteristics of EMS fellowships in the United States. Prehosp Emerg Care. 2023;27(1):84–9. https://doi.org/10.1080/10903127.2021.2015023.
5. Bucher J, Zaidi HQ. A brief history of emergency medical services in the United States. EMRA; 2021. https://www.emra.org/about-emra/history/ems-history/.