1. Rocky Mountain Poison and Drug Center, Denver Health and Hospital Authority, Denver, CO, USA;
2. Ramathibodi Poison Center – Division of Clinical Pharmacology and Toxicology, Department of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand;
3. Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, CO, USA;
4. Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA;
5. Department of Emergency Medicine, Carolinas Medical Center, Charlotte, NC, USA;
6. Department of Internal Medicine, Division of Critical Care, Carolinas Medical Center, Charlotte, NC, USA