1. Department of Laboratory Medicine, University of California, San Francisco and Zuckerberg San Francisco General, 1001 Potrero Ave, ZSFG Bldg 5, San Francisco, CA, USA
2. Department of Emergency Medicine, Hennepin Healthcare, Minneapolis, MN, USA
3. California Poison Control System, San Francisco Division, CA, USA
4. Emergency Medicine, San Mateo Medical Center, San Mateo, CA, USA