1. Oregon Health & Science University, Portland, OR, USA
2. Department of Family Medicine, Oregon Health & Science University, Portland, OR, USA
3. Department of Emergency Medicine, Stanford University School of Medicine, Palo Alto, CA, USA
4. Department of Pediatrics, Oregon Health & Science University, Portland, OR, USA
5. Department of Anesthesiology & Perioperative Medicine, Oregon Health & Science University, Portland, OR, USA