*Department of Pathology, UT Southwestern Medical Center, Dallas, TX

Departments of †Pathology

¶¶Head and Neck Surgery, University Health Network and the University of Toronto, Toronto, ON, Canada

‡Peter MacCallum Cancer Centre, Melbourne, Vic.

§PathWest Laboratory Medicine, QEII Medical Centre, Perth, WA, Australia

∥Department of Anatomic Pathology, Tokyo Medical University

#Department of Pathology, National Hospital Organization Tokyo Medical Center, Tokyo

¶Department of Pathology & Microbiology, Faculty of Medicine, Saga University, Saga

**Department of Diagnostic Pathology, Asama Nanroku Komoro Medical Center, Nagano

††Department of Pathology, Yokkaichi Municipal Hospital, Mie

‡‡Department of Pathology, Kindai University Faculty of Medicine, Osaka-Sayama

##Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan

§§Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital

∥∥School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan

Conflicts of Interest and Source of Funding: Supported by Jane B. and Edwin P. Jenevein M.D Endowment for Pathology at UT Southwestern Medical Center. The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.

Correspondence: Justin A. Bishop, MD, University of Texas Southwestern Medical Center, 6201 Harry Hines Boulevard, Dallas, TX 75390 (e-mail: [email protected]).