1. Department of Emergency Medicine University of Maryland School of Medicine Baltimore Maryland USA
2. Department of Emergency Medicine AdventHealth Tampa Tampa Florida USA
3. Division of Otolaryngology–Head & Neck Surgery Beth Israel Deaconess Medical Center, Harvard Medical School Boston Massachusetts USA
4. Department of Emergency Medicine Hospital de Clínicas de Porto Alegre Porto Alegre RS Brazil
5. Department of Emergency Medicine Mayo Clinic Rochester Minnesota USA
6. Department of Emergency Medicine Beth Israel Deaconess Medical Center, Harvard Medical School Boston Massachusetts USA
7. Mayo Clinic Libraries Mayo Clinic Rochester Minnesota USA
8. Department of Emergency Medicine Washington University in St. Louis St. Louis Missouri USA