[1] Univ Calif Irvine UCI, Dept Surg, City Blvd West,Suite 1600, Orange, CA 92868 USA
[2] Univ Southern Calif USC, Dept Surg, Los Angeles, CA USA
[3] Cedars Sinai Med Ctr, Dept Surg, Los Angeles, CA 90048 USA
[4] Univ Calif Los Angeles UCLA, Dept Surg, Los Angeles, CA USA
[5] Loma Linda Univ, Dept Surg, Loma Linda, CA 92350 USA
[6] Riverside Univ Hlth Syst Med Ctr Univ, Moreno Valley, CA USA
[7] Riverside Univ Hlth Syst, Univ Calif Riverside, Dept Surg, Moreno Valley, CA USA
[8] Univ Calif San Diego UCSD, Dept Surg, San Diego, CA USA
[9] Sharp Mem Hosp & Rehabil Ctr, Dept Surg, San Diego, CA USA
[10] Scripps Mem Hosp La Jolla, Trauma Dept, La Jolla, CA USA
[11] Ventura Cty Med Ctr, Dept Surg, Ventura, CA USA
[12] Santa Barbara Cottage Hosp, Cottage Hlth Res Inst, Santa Barbara, CA USA