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1 Department of Emergency Medicine, Kaiser Permanente Vallejo Medical Center, Vallejo, CA; Kaiser Permanente Division of Research, Oakland, CA; The Kaiser Permanente CREST Network, Pleasanton, CA.
2 Department of Emergency Medicine, University of California, Davis, CA.
3 Kaiser Permanente Division of Research, Oakland, CA; The Kaiser Permanente CREST Network.
4 Department of Emergency Medicine, UMASS Chan Medical School-Baystate, Springfield, MA.
5 Kaiser Permanente Division of Research, Oakland, CA; The Kaiser Permanente CREST Network; Department of Emergency Medicine, Kaiser Permanente Roseville Medical Center, Roseville, CA.
1 Department of Emergency Medicine, Kaiser Permanente Vallejo Medical Center, Vallejo, CA; Kaiser Permanente Division of Research, Oakland, CA; The Kaiser Permanente CREST Network, Pleasanton, CA.
2 Department of Emergency Medicine, University of California, Davis, CA.
3 Kaiser Permanente Division of Research, Oakland, CA; The Kaiser Permanente CREST Network.
4 Department of Emergency Medicine, UMASS Chan Medical School-Baystate, Springfield, MA.
5 Kaiser Permanente Division of Research, Oakland, CA; The Kaiser Permanente CREST Network; Department of Emergency Medicine, Kaiser Permanente Roseville Medical Center, Roseville, CA.