*Division of Surgical Oncology, Department of Surgery

†Department of Pathology

¶Department of Medicine Statistics Core, David Geffen School of Medicine

**Jonsson Comprehensive Cancer Center, University of California, Los Angeles

∥Department of Surgery, Greater Los Angeles Veterans Health Administration

#Department of Pathology, University of Southern California, Los Angeles

‡Department of Pathology, University of California, San Francisco, San Francisco, CA

§Department of Surgery, Yale School of Medicine, New Haven, CT

Conflicts of Interest and Source of Funding: The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.

Correspondence: Sarah M. Dry, MD, UCLA, Los Angeles, CA (e-mail: [email protected]).