1. Department of Emergency Medicine, The Ohio State University, OH 43210, USA
2. Department of Internal Medicine, The Ohio State University, OH 43210, USA
3. Department of Emergency Medicine, Loma Linda University Medical Center, CA 92354, USA
4. Department of Anesthesiology, Center for Pain Medicine, UC San Diego Health, CA 92103, USA
5. Department of Emergency Medicine, UC San Diego Health, CA 92103, USA