[1] Univ Calif Los Angeles, Dept Hlth Policy & Management, Fielding Sch Publ Hlth, Los Angeles, CA USA
[2] HSR&D Ctr Healthcare Innovat Implementat & Policy, VA Greater Los Angeles Healthcare Syst, Los Angeles, CA USA
[3] Vet Emergency Management Evaluat Ctr, Los Angeles, CA 91604 USA
[4] Univ Calif Los Angeles, VA Greater Los Angeles Healthcare Syst, Los Angeles, CA USA
[5] Univ Calif Los Angeles, Fielding Sch Publ Hlth, Dept Hlth Policy & Management, Los Angeles, CA 90024 USA
[6] Univ Calif Los Angeles, Sch Nursing, Los Angeles, CA 90024 USA