aDenver Health Medical Center, University of Colorado School of Medicine, Denver Colorado, USA

bEmergency Department, Kettering General Hospital, Kettering, UK

cDepartment of Cardiovascular Sciences, University of Leicester, Leicester, UK

dDepartment of Emergency Medicine, Alexandria University, Alexandria, Egypt

eEmergency Department, Ramón y Cajal University Hospital, Madrid, Spain

fHealth Science Department, Section of Anesthesia and Critical Care, University of Florence, Florence, Italy

gDepartment of Anesthesia and Critical Care, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy

Received 5 July 2023 Accepted 24 October 2023.

Correspondence to Ivor S. Douglas, MD, Denver Health Medical Center, University of Colorado School of Medicine, 601 Broadway, MC 4000, Denver, CO 80204, USA Tel: +1 303 436 6000; e-mail: [email protected]