Kelly E. Quinley, MD ⁎ 
Department of Emergency Medicine, Highland Hospital Alameda Health System, Oakland, CA 94602
⁎Corresponding author at: Department of Emergency Medicine, Highland Hospital, Alameda Health System, QIC 22123, 1411 East 31st Street, Oakland, CA 94602.Department of Emergency MedicineHighland Hospital, Alameda Health SystemQIC 22123, 1411 East 31st StreetOaklandCA94602
Hsien-Yi Chen, MD 
Department of Emergency Medicine, Chang-Gung Memorial Hospital, Taoyuan, Taiwan
San Francisco Division of California Poison Control System,San Francisco, CA
He S. Yang, PhD
, Kara L. Lynch, PhD 
Department of Laboratory Medicine, University of California San Francisco, 1001 Potrero Ave, NH2M16, San Francisco, CA 94110
Kent R. Olson, MD 
San Francisco Division of the California Poison Control System, University of California San Francisco, San Francisco, CA 94143-1369