Arrowhead Regional Medical Center

University of California (San Francisco)/​Fresno

University of California (San Diego) Medical Center

Loma Linda University Health Education Consortium

Cedars-​Sinai Medical Center

University of Southern California/​LAC+USC Medical Center

UCLA David Geffen School of Medicine/​UCLA Medical Center

Kaiser Permanente Southern California (Los Angeles)

Kaiser Permanente Northern California (Oakland)

University of California (Irvine)

University of California Davis Health

Naval Medical Center (San Diego)

University of California (San Francisco)

California Pacific Medical Center

Stanford University

Los Angeles County-​Harbor-​UCLA Medical Center