1. Department of Emergency Medicine, Division of Medical Toxicology, Medical College of WI, Milwaukee, WI, USA
2. Department of Emergency Medicine and Division of Medical Toxicology, University of CA Davis, Sacramento, CA, USA
3. Denver Health, Rocky Mountain Poison and Drug Safety, Denver, CO, USA
4. Denver Health, Rocky Mountain Poison and Drug Safety, Department of Medicine, Section of Medical Toxicology, Denver, CO, USA