1. From the Department of Emergency Medicine University of California Los Angeles Los Angeles CAUSA
2. and the VA Greater Los Angeles Healthcare System Wadsworth Anaerobe Laboratory Los Angeles CAUSA
3. the Emergency Department Maimonides Medical Center Brooklyn NYUSA
4. the Department of Emergency Medicine Brown University Warren Alpert Medical School Providence NYUSA
5. Sierra Nevada Memorial Hospital Grass Valley CAUSA
6. UCSF/ZSFGH Department of Emergency Medicine and Kaiser Permanente San Francisco CAUSA
7. and Alameda HospitalAlameda Health System Oakland CAUSA