[1] Harbor UCLA Med Ctr, Dept Surg, Torrance, CA 90509 USA
[2] Harbor UCLA Med Ctr, Dept Emergency Med, Torrance, CA 90509 USA
[3] Harbor UCLA Med Ctr, Los Angeles Biomed Inst, Torrance, CA 90509 USA
[4] Univ Calif Davis, Med Ctr, Dept Surg, Davis, CA 95616 USA
[5] Loma Linda Univ, Dept Surg, Loma Linda, CA 92350 USA
[6] Stanford Univ, Dept Surg, Stanford, CA 94305 USA
[7] Cedars Sinai Med Ctr, Dept Surg, Los Angeles, CA 90048 USA
[8] Univ Calif Irvine, Dept Surg, Med Ctr, Irvine, CA 92717 USA